Optical image capturing system

ABSTRACT

An optical image capturing system includes, along the optical axis in order from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. At least one lens among the first to the sixth lenses has positive refractive power. The seventh lens has negative refractive power, wherein both surfaces thereof can be aspheric, and at least one surface thereof has an inflection point. The lenses in the optical image capturing system which have refractive power include the first to the seventh lenses. The optical image capturing system can increase aperture value and improve the imaging quality for use in compact cameras.

BACKGROUND OF THE INVENTION 1. Technical Field

The present invention generally relates to an optical system, and moreparticularly to a compact optical image capturing system for anelectronic device.

2. Description of Related Art

In recent years, with the rise of portable electronic devices havingcamera functionalities, the demand for an optical image capturing systemis raised gradually. The image sensing device of the ordinaryphotographing camera is commonly selected from charge coupled device(CCD) or complementary metal-oxide semiconductor sensor (CMOS Sensor).Also, as advanced semiconductor manufacturing technology enables theminimization of the pixel size of the image sensing device, thedevelopment of the optical image capturing system towards the field ofhigh pixels. Therefore, the requirement for high imaging quality israpidly raised.

The conventional optical system of the portable electronic deviceusually has five or sixth lenses. However, the optical system is askedto take pictures in a dark environment, in other words, the opticalsystem is asked to have a large aperture. The conventional opticalsystem provides high optical performance as required.

It is an important issue to increase the quantity of light entering thelens. Also, the modern lens is also asked to have several characters,including high image quality.

BRIEF SUMMARY OF THE INVENTION

The aspect of embodiment of the present disclosure directs to an opticalimage capturing system and an optical image capturing lens which usecombination of refractive powers, convex and concave surfaces ofseven-piece optical lenses (the convex or concave surface in thedisclosure denotes the geometrical shape of an image-side surface or anobject-side surface of each lens on an optical axis) to increase thequantity of incoming light of the optical image capturing system, and toimprove imaging quality for image formation, so as to be applied tominimized electronic products.

The term and its definition to the lens parameter in the embodiment ofthe present are shown as below for further reference.

The lens parameter related to a length or a height in the lens:

For visible spectrum, the present invention may adopt the wavelength of555 nm as the primary reference wavelength and the basis for themeasurement of focus shift; for infrared spectrum (700-1300 nm), thepresent invention may adopt the wavelength of 940 nm as the primaryreference wavelength and the basis for the measurement of focus shift.

The optical image capturing system includes an image plane specificallyfor the infrared light which is perpendicular to the optical axis,wherein the through-focus modulation transfer rate (value of MTF) at afirst spatial frequency has a maximum value in the central of field ofview of the image plane specifically for the infrared light, wherein thefirst spatial frequency is denoted by SP1, which satisfies the followingcondition: SP1≤440 cycles/mm Preferably, the first spatial frequencysatisfies the following condition: SP1≤220 cycles/mm.

A maximum height for image formation of the optical image capturingsystem is denoted by HOI. A height of the optical image capturing systemis denoted by HOS. A distance from the object-side surface of the firstlens to the image-side surface of the seventh lens is denoted by InTL. Adistance between the aperture and the image plane specifically for theinfrared light is denoted by InS. A distance from the first lens to thesecond lens is denoted by IN12 (instance). A central thickness of thefirst lens of the optical image capturing system on the optical axis isdenoted by TP1 (instance).

The lens parameter related to a material in the lens:

An Abbe number of the first lens in the optical image capturing systemis denoted by NA1 (instance). A refractive index of the first lens isdenoted by Nd1 (instance).

The lens parameter related to a view angle of the lens:

A view angle is denoted by AF. Half of the view angle is denoted by HAF.A major light angle is denoted by MRA.

The lens parameter related to exit/entrance pupil in the lens:

An entrance pupil diameter of the optical image capturing system isdenoted by HEP. An exit pupil diameter of the image-side surface of theseventh lens is denoted by HXP. For any surface of any lens, a maximumeffective half diameter (EHD) is a perpendicular distance between anoptical axis and a crossing point on the surface where the incidentlight with a maximum viewing angle of the system passing the very edgeof the entrance pupil. For example, the maximum effective half diameterof the object-side surface of the first lens is denoted by EHD11, themaximum effective half diameter of the image-side surface of the firstlens is denoted by EHD12, the maximum effective half diameter of theobject-side surface of the second lens is denoted by EHD21, the maximumeffective half diameter of the image-side surface of the second lens isdenoted by EHD22, and so on.

The lens parameter related to a depth of the lens shape:

A displacement from a point on the object-side surface of the seventhlens, which is passed through by the optical axis, to a point on theoptical axis, where a projection of the maximum effective semi diameterof the object-side surface of the seventh lens ends, is denoted byInRS71 (the depth of the maximum effective semi diameter). Adisplacement from a point on the image-side surface of the seventh lens,which is passed through by the optical axis, to a point on the opticalaxis, where a projection of the maximum effective semi diameter of theimage-side surface of the seventh lens ends, is denoted by InRS72 (thedepth of the maximum effective semi diameter). The depth of the maximumeffective semi diameter (sinkage) on the object-side surface or theimage-side surface of any other lens is denoted in the same manner

The lens parameter related to the lens shape:

A critical point C is a tangent point on a surface of a specific lens,and the tangent point is tangent to a plane perpendicular to the opticalaxis and the tangent point cannot be a crossover point on the opticalaxis. Following the above description, a distance perpendicular to theoptical axis between a critical point C51 on the object-side surface ofthe fifth lens and the optical axis is HVT51 (instance), and a distanceperpendicular to the optical axis between a critical point C52 on theimage-side surface of the fifth lens and the optical axis is HVT 52(instance). A distance perpendicular to the optical axis between acritical point C61 on the object-side surface of the sixth lens and theoptical axis is HVT61 (instance), and a distance perpendicular to theoptical axis between a critical point C62 on the image-side surface ofthe sixth lens and the optical axis is HVT62 (instance). A distanceperpendicular to the optical axis between a critical point on theobject-side or image-side surface of other lenses, such as the seventhlens, the optical axis is denoted in the same manner

The object-side surface of the seventh lens has one inflection pointIF711 which is nearest to the optical axis, and the sinkage value of theinflection point IF711 is denoted by SGI711 (instance). A distanceperpendicular to the optical axis between the inflection point IF711 andthe optical axis is HIF711 (instance). The image-side surface of theseventh lens has one inflection point IF721 which is nearest to theoptical axis, and the sinkage value of the inflection point IF721 isdenoted by SGI721 (instance). A distance perpendicular to the opticalaxis between the inflection point IF721 and the optical axis is HIF721(instance).

The object-side surface of the seventh lens has one inflection pointIF712 which is the second nearest to the optical axis, and the sinkagevalue of the inflection point IF712 is denoted by SGI712 (instance). Adistance perpendicular to the optical axis between the inflection pointIF712 and the optical axis is HIF712 (instance). The image-side surfaceof the seventh lens has one inflection point IF722 which is the secondnearest to the optical axis, and the sinkage value of the inflectionpoint IF722 is denoted by SGI722 (instance). A distance perpendicular tothe optical axis between the inflection point IF722 and the optical axisis HIF722 (instance).

The object-side surface of the seventh lens has one inflection pointIF713 which is the third nearest to the optical axis, and the sinkagevalue of the inflection point IF713 is denoted by SGI713 (instance). Adistance perpendicular to the optical axis between the inflection pointIF713 and the optical axis is HIF713 (instance). The image-side surfaceof the seventh lens has one inflection point IF723 which is the thirdnearest to the optical axis, and the sinkage value of the inflectionpoint IF723 is denoted by SGI723 (instance). A distance perpendicular tothe optical axis between the inflection point IF723 and the optical axisis HIF723 (instance).

The object-side surface of the seventh lens has one inflection pointIF714 which is the fourth nearest to the optical axis, and the sinkagevalue of the inflection point IF714 is denoted by SGI714 (instance). Adistance perpendicular to the optical axis between the inflection pointIF714 and the optical axis is HIF714 (instance). The image-side surfaceof the seventh lens has one inflection point IF724 which is the fourthnearest to the optical axis, and the sinkage value of the inflectionpoint IF724 is denoted by SGI724 (instance). A distance perpendicular tothe optical axis between the inflection point IF724 and the optical axisis HIF724 (instance).

An inflection point, a distance perpendicular to the optical axisbetween the inflection point and the optical axis, and a sinkage valuethereof on the object-side surface or image-side surface of other lensesis denoted in the same manner

The lens parameter related to an aberration:

Optical distortion for image formation in the optical image capturingsystem is denoted by ODT. TV distortion for image formation in theoptical image capturing system is denoted by TDT. Further, the range ofthe aberration offset for the view of image formation may be limited to50%-100% field. An offset of the spherical aberration is denoted by DFS.An offset of the coma aberration is denoted by DFC.

A modulation transfer function (MTF) graph of an optical image capturingsystem is used to test and evaluate the contrast and sharpness of thegenerated images. The vertical axis of the coordinate system of the MTFgraph represents the contrast transfer rate, of which the value isbetween 0 and 1, and the horizontal axis of the coordinate systemrepresents the spatial frequency, of which the unit is cycles/mm or 1p/mm, i.e., line pairs per millimeter. Theoretically, a perfect opticalimage capturing system can present all detailed contrast and every lineof an object in an image. However, the contrast transfer rate of apractical optical image capturing system along a vertical axis thereofwould be less than 1. In addition, peripheral areas in an image wouldhave a poorer realistic effect than a center area thereof has. Forinfrared spectrum, the values of MTF in the spatial frequency of 55cycles/mm at the optical axis, 0.3 field of view, and 0.7 field of viewon an image plane specifically for the infrared light are respectivelydenoted by MTFE0, MTFEB3, and MTFE7; the values of MTF in the spatialfrequency of 110 cycles/mm at the optical axis, 0.3 field of view, and0.7 field of view on an image plane are respectively denoted by MTFQ0,MTFQ3, and MTFQ7; the values of MTF in the spatial frequency of 220cycles/mm at the optical axis, 0.3 field of view, and 0.7 field of viewon an image plane are respectively denoted by MTFH0, MTFH3, and MTFH7;the values of MTF in the spatial frequency of 440 cycles/mm at theoptical axis, 0.3 field of view, and 0.7 field of view on the imageplane are respectively denoted by MTFO, MTF3, and MTF7. The threeaforementioned fields of view respectively represent the center, theinner field of view, and the outer field of view of a lens, and,therefore, can be used to evaluate the performance of an optical imagecapturing system. If the optical image capturing system provided in thepresent invention corresponds to photosensitive components which providepixels having a size no large than 1.12 micrometer, a quarter of thespatial frequency, a half of the spatial frequency (half frequency), andthe full spatial frequency (full frequency) of the MTF diagram arerespectively at least 110 cycles/mm, 220 cycles/mm and 440 cycles/mm

If an optical image capturing system is required to be able also toimage for infrared spectrum, e.g., to be used in low-light environments,then the optical image capturing system should be workable inwavelengths of 850 nm to 960 nm. Since the main function for an opticalimage capturing system used in low-light environment is to distinguishthe shape of objects by light and shade, which does not require highresolution, it is appropriate to only use spatial frequency less than110 cycles/mm for evaluating the performance of optical image capturingsystem in the infrared spectrum.

The present invention provides an optical image capturing system,wherein the seventh lens thereof is provided with an inflection point atthe object-side surface or at the image-side surface to adjust theincident angle of each view field and modify the ODT and the TDT. Inaddition, the surfaces of the seventh lens are capable of modifying theoptical path to improve the imagining quality.

The optical image capturing system of the present invention includes afirst lens, a second lens, a third lens, a fourth lens, a fifth lens, asixth lens, a seventh lens, and an image plane specifically for theinfrared light in order along an optical axis from an object side to animage side. The first lens to the seventh lens all have refractivepower. The optical image capturing system satisfies:

0.5≤f/HEP≤1.8; 0 deg<HAF≤60 deg; and 0.5≤SETP/STP<1;

where f1, f2, f3, f4, f5, f6, and f7 are respectively a focal length ofthe first lens to the seventh lens; f is a focal length of the opticalimage capturing system; HEP is an entrance pupil diameter of the opticalimage capturing system; HXP is an exit pupil diameter of the image-sidesurface of the seventh lens; HOS is a distance between the object-sidesurface of the first lens and the image plane specifically for theinfrared light; HAF is a half of the maximum field angle of the opticalimage capturing system; HOI is a maximum height for image formationperpendicular to the optical axis on the image plane specifically forthe infrared light; ETP1, ETP2, ETP3, ETP4, ETP5, ETP6, and ETP7 arerespectively a thickness in parallel with the optical axis at a heightof ½ HXP of the first lens to the seventh lens, wherein SETP is a sum ofthe aforementioned ETP1 to ETP7; TP1, TP2, TP3, TP4, TP5, TP6, and TP7are respectively a thickness at the optical axis of the first lens tothe seventh lens, wherein STP is a sum of the aforementioned TP1 to TP7.

The present invention further provides an optical image capturingsystem, including a first lens, a second lens, a third lens, a fourthlens, a fifth lens, a sixth lens, a seventh lens, and an image planespecifically for the infrared light, in order along an optical axis froman object side to an image side. At least one surface of at least onelens among the first lens to the seventh lens has at least an inflectionpoint thereon. The optical image capturing system satisfies:

0.5≤f/HEP≤1.5; 0 deg<HAF≤50 deg; and 0.2≤EIN/ETL<1;

where f1, f2, f3, f4, f5, f6, and f7 are respectively a focal length ofthe first lens to the seventh lens; f is a focal length of the opticalimage capturing system; HEP is an entrance pupil diameter of the opticalimage capturing system; HXP is an exit pupil diameter of the image-sidesurface of the seventh lens; HOS is a distance between the object-sidesurface of the first lens and the image plane; InTL is a distance fromthe object-side surface of the first lens to the image-side surface ofthe seventh lens on the optical axis; HAF is a half of the maximum fieldangle of the optical image capturing system; ETL is a distance inparallel with the optical axis between a coordinate point at a height of½ HEP on the object-side surface of the first lens and the image planespecifically for the infrared light; EIN is a distance in parallel withthe optical axis between the coordinate point at the height of ½ HEP onthe object-side surface of the first lens and a coordinate point at aheight of ½ HEP on the image-side surface of the seventh lens.

The present invention further provides an optical image capturingsystem, including a first lens, a second lens, a third lens, a fourthlens, a fifth lens, a sixth lens, a seventh lens, and an image planespecifically for the infrared light, in order along an optical axis froman object side to an image side. The number of the lenses havingrefractive power in the optical image capturing system is seven. Atleast one surface of at least two lenses among the first lens to theseventh lens has at least an inflection point thereon. The optical imagecapturing system satisfies:

0.5≤f/HEP≤1.3; 10 deg<HAF≤45 deg; and 0.2≤SETP/STP<1;

where f is a focal length of the optical image capturing system; HEP isan entrance pupil diameter of the optical image capturing system; HAF isa half of the maximum field angle of the optical image capturing system;HOI is a maximum height for image formation perpendicular to the opticalaxis on the image plane specifically for the infrared light; ETP1, ETP2,ETP3, ETP4, ETP5, ETP6, and ETP7 are respectively a thickness inparallel with the optical axis at a height of ½ HEP of the first lens tothe seventh lens, wherein SETP is a sum of the aforementioned ETP1 toETP7; TP1, TP2, TP3, TP4, TP5, TP6, and TP7 are respectively a centralthickness on the optical axis of the first lens to the seventh lens,wherein STP is a sum of the aforementioned TP1 to TP7.

For any lens, the thickness at the height of a half of the entrancepupil diameter (HEP) particularly affects the ability of correctingaberration and differences between optical paths of light in differentfields of view of the common region of each field of view of lightwithin the covered range at the height of a half of the entrance pupildiameter (HEP). With greater thickness, the ability to correctaberration is better. However, the difficulty of manufacturing increasesas well. Therefore, the thickness at the height of a half of theentrance pupil diameter (HEP) of any lens has to be controlled. Theratio between the thickness (ETP) at the height of a half of theentrance pupil diameter (HEP) and the thickness (TP) of any lens on theoptical axis (i.e., ETP/TP) has to be particularly controlled. Forexample, the thickness at the height of a half of the entrance pupildiameter (HEP) of the first lens is denoted by ETP1, the thickness atthe height of a half of the entrance pupil diameter (HEP) of the secondlens is denoted by ETP2, and the thickness at the height of a half ofthe entrance pupil diameter (HEP) of any other lens in the optical imagecapturing system is denoted in the same manner The optical imagecapturing system of the present invention satisfies:

0.3≤SETP/EIN<1;

where SETP is the sum of the aforementioned ETP1 to ETP5.

In order to enhance the ability of correcting aberration and to lowerthe difficulty of manufacturing at the same time, the ratio between thethickness (ETP) at the height of a half of the entrance pupil diameter(HEP) and the thickness (TP) of any lens on the optical axis (i.e.,ETP/TP) has to be particularly controlled. For example, the thickness atthe height of a half of the entrance pupil diameter (HEP) of the firstlens is denoted by ETP1, the thickness of the first lens on the opticalaxis is TP1, and the ratio between these two parameters is ETP1/TP1; thethickness at the height of a half of the entrance pupil diameter (HEP)of the first lens is denoted by ETP2, the thickness of the second lenson the optical axis is TP2, and the ratio between these two parametersis ETP2/TP2. The ratio between the thickness at the height of a half ofthe entrance pupil diameter (HEP) and the thickness of any other lens inthe optical image capturing system is denoted in the same manner Theoptical image capturing system of the present invention satisfies:

0.2≤ETP/TP<3.

The horizontal distance between two neighboring lenses at the height ofa half of the entrance pupil diameter (HEP) is denoted by ED, whereinthe aforementioned horizontal distance (ED) is parallel to the opticalaxis of the optical image capturing system, and particularly affects theability of correcting aberration and differences between optical pathsof light in different fields of view of the common region of each fieldof view of light at the height of a half of the entrance pupil diameter(HEP). With longer distance, the ability to correct aberration ispotential to be better. However, the difficulty of manufacturingincreases, and the feasibility of “slightly shorten” the length of theoptical image capturing system is limited as well. Therefore, thehorizontal distance (ED) between two specific neighboring lenses at theheight of a half of the entrance pupil diameter (HEP) has to becontrolled.

In order to enhance the ability of correcting aberration and to lowerthe difficulty of “slightly shorten” the length of the optical imagecapturing system at the same time, the ratio between the horizontaldistance (ED) between two neighboring lenses at the height of a half ofthe entrance pupil diameter (HEP) and the parallel distance (IN) betweenthese two neighboring lens on the optical axis (i.e., ED/IN) has to beparticularly controlled. For example, the horizontal distance betweenthe first lens and the second lens at the height of a half of theentrance pupil diameter (HEP) is denoted by ED12, the horizontaldistance between the first lens and the second lens on the optical axisis denoted by IN12, and the ratio between these two parameters isED12/IN12; the horizontal distance between the second lens and the thirdlens at the height of a half of the entrance pupil diameter (HEP) isdenoted by ED23, the horizontal distance between the second lens and thethird lens on the optical axis is denoted by IN23, and the ratio betweenthese two parameters is ED23/IN23. The ratio between the horizontaldistance between any two neighboring lenses at the height of a half ofthe entrance pupil diameter (HEP) and the horizontal distance betweenthese two neighboring lenses on the optical axis is denoted in the samemanner.

The horizontal distance in parallel with the optical axis between acoordinate point at the height of ½ HEP on the image-side surface of theseventh lens and image plane specifically for the infrared light isdenoted by EBL. The horizontal distance in parallel with the opticalaxis between the point on the image-side surface of the seventh lenswhere the optical axis passes through and the image plane specificallyfor the infrared light is denoted by BL. To enhance the ability tocorrect aberration and to preserve more space for other opticalcomponents, the optical image capturing system of the present inventioncan satisfy 0.2≤EBL/BL≤1.5. The optical image capturing system canfurther include a filtering component, which is provided between theseventh lens and the image plane specifically for the infrared light,wherein the horizontal distance in parallel with the optical axisbetween the coordinate point at the height of ½ HEP on the image-sidesurface of the seventh lens and the filtering component is denoted byEIR, and the horizontal distance in parallel with the optical axisbetween the point on the image-side surface of the seventh lens wherethe optical axis passes through and the filtering component is denotedby PIR. The optical image capturing system of the present invention cansatisfy 0.1≤EIR/PIR≤1.

In an embodiment, a height of the optical image capturing system (HOS)can be reduced while |f1|>|f7|.

In an embodiment, when the lenses satisfy |f2|+|f3|+|f4|+|f5|+|f6| and|f1|+|f7|, at least one lens among the second to the sixth lenses couldhave weak positive refractive power or weak negative refractive power.Herein the weak refractive power means the absolute value of the focallength of one specific lens is greater than 10. When at least one lensamong the second to the sixth lenses has weak positive refractive power,it may share the positive refractive power of the first lens, and on thecontrary, when at least one lens among the second to the sixth lenseshas weak negative refractive power, it may fine tune and correct theaberration of the system.

In an embodiment, the seventh lens could have negative refractive power,and an image-side surface thereof is concave, it may reduce back focallength and size. Besides, the seventh lens can have at least aninflection point on at least a surface thereof, which may reduce anincident angle of the light of an off-axis field of view and correct theaberration of the off-axis field of view.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

The present invention will be best understood by referring to thefollowing detailed description of some illustrative embodiments inconjunction with the accompanying drawings, in which

FIG. 1A is a schematic diagram of a first embodiment of the presentinvention;

FIG. 1B shows curve diagrams of longitudinal spherical aberration,astigmatic field, and optical distortion of the optical image capturingsystem in the order from left to right of the first embodiment of thepresent application;

FIG. 1C shows a feature map of modulation transformation of the opticalimage capturing system of the first embodiment of the presentapplication in infrared spectrum;

FIG. 2A is a schematic diagram of a second embodiment of the presentinvention;

FIG. 2B shows curve diagrams of longitudinal spherical aberration,astigmatic field, and optical distortion of the optical image capturingsystem in the order from left to right of the second embodiment of thepresent application;

FIG. 2C shows a feature map of modulation transformation of the opticalimage capturing system of the second embodiment of the presentapplication in infrared spectrum;

FIG. 3A is a schematic diagram of a third embodiment of the presentinvention;

FIG. 3B shows curve diagrams of longitudinal spherical aberration,astigmatic field, and optical distortion of the optical image capturingsystem in the order from left to right of the third embodiment of thepresent application;

FIG. 3C shows a feature map of modulation transformation of the opticalimage capturing system of the third embodiment of the presentapplication in infrared spectrum;

FIG. 4A is a schematic diagram of a fourth embodiment of the presentinvention;

FIG. 4B shows curve diagrams of longitudinal spherical aberration,astigmatic field, and optical distortion of the optical image capturingsystem in the order from left to right of the fourth embodiment of thepresent application;

FIG. 4C shows a feature map of modulation transformation of the opticalimage capturing system of the fourth embodiment in infrared spectrum;

FIG. 5A is a schematic diagram of a fifth embodiment of the presentinvention;

FIG. 5B shows curve diagrams of longitudinal spherical aberration,astigmatic field, and optical distortion of the optical image capturingsystem in the order from left to right of the fifth embodiment of thepresent application;

FIG. 5C shows a feature map of modulation transformation of the opticalimage capturing system of the fifth embodiment of the presentapplication in infrared spectrum;

FIG. 6A is a schematic diagram of a sixth embodiment of the presentinvention;

FIG. 6B shows curve diagrams of longitudinal spherical aberration,astigmatic field, and optical distortion of the optical image capturingsystem in the order from left to right of the sixth embodiment of thepresent application; and

FIG. 6C shows a feature map of modulation transformation of the opticalimage capturing system of the sixth embodiment of the presentapplication in infrared spectrum.

DETAILED DESCRIPTION OF THE INVENTION

An optical image capturing system of the present invention includes afirst lens, a second lens, a third lens, a fourth lens, a fifth lens, asixth lens, a seventh lens, and an image plane specifically for theinfrared light from an object side to an image side. The optical imagecapturing system further is provided with an image sensor at an imageplane specifically for the infrared light. Image heights in thefollowing embodiments are all almost 3.91 mm

The optical image capturing system could work in three infrared lightwavelengths, including 850 nm, 940 nm, and 960 nm, wherein 960 nm is themain reference wavelength and is the reference wavelength for obtainingthe technical characters.

The optical image capturing system could work in three visible lightwavelengths, including 486.1 nm, 587.5 nm, and 656.2 nm, wherein 587.5nm is the main reference wavelength and is the reference wavelength forobtaining the technical characters. The optical image capturing systemcan also work in five wavelengths, including 470 nm, 510 nm, 555 nm, 610nm, and 650 nm wherein 555 nm is the main reference wavelength, and isthe reference wavelength for obtaining the visible light technicalcharacters.

The optical image capturing system of the present invention satisfies0.5≤ΣPPR/|ΣNPR|≤15, and a preferable range is 1≤ΣPPR/|ΣNPR|≤3.0, wherePPR is a ratio of the focal length f of the optical image capturingsystem to a focal length fp of each of lenses with positive refractivepower; NPR is a ratio of the focal length f of the optical imagecapturing system to a focal length fn of each of lenses with negativerefractive power; ΣPPR is a sum of the PPRs of each positive lens; andΣNPR is a sum of the NPRs of each negative lens. It is helpful forcontrol of an entire refractive power and an entire length of theoptical image capturing system.

The image sensor is provided on the image plane, and is provided with atleast one hundred thousand pixels. The optical image capturing system ofthe present invention satisfies HOS/HOI≤10 and 0.5≤HOS/f≤10, and apreferable range is 1≤HOS/HOI≤5 and 1≤HOS/f≤7, where HOI is a half of adiagonal of an effective sensing area of the image sensor, i.e., themaximum image height, and HOS is a height of the optical image capturingsystem, i.e. a distance on the optical axis between the object-sidesurface of the first lens and the image plane specifically for theinfrared light. It is helpful for reduction of the size of the systemfor used in compact cameras.

The optical image capturing system of the present invention further isprovided with an aperture to increase image quality.

In the optical image capturing system of the present invention, theaperture could be a front aperture or a middle aperture, wherein thefront aperture is provided between the object and the first lens, andthe middle is provided between the first lens and the image planespecifically for the infrared light. The front aperture provides a longdistance between an exit pupil of the system and the image planespecifically for the infrared light, which allows more elements to beinstalled. The middle could enlarge a view angle of view of the systemand increase the efficiency of the image sensor. The optical imagecapturing system satisfies 0.2≤InS/HOS≤1.1, where InS is a distancebetween the aperture and the image-side surface of the sixth lens. It ishelpful for size reduction and wide angle.

The optical image capturing system of the present invention satisfies0.1≤ΣTP/InTL≤0.9, where InTL is a distance between the object-sidesurface of the first lens and the image-side surface of the seventhlens, and ΣTP is a sum of central thicknesses of the lenses on theoptical axis. It is helpful for the contrast of image and yield rate ofmanufacture and provides a suitable back focal length for installationof other elements.

The optical image capturing system of the present invention satisfies0.001≤|R1/R2|≤20, and a preferable range is 0.01≤|R1/R2|≤10, where R1 isa radius of curvature of the object-side surface of the first lens, andR2 is a radius of curvature of the image-side surface of the first lens.It provides the first lens with a suitable positive refractive power toreduce the increase rate of the spherical aberration.

The optical image capturing system of the present invention satisfies−7<(R13−R14)/(R13+R14)<50, where R13 is a radius of curvature of theobject-side surface of the seventh lens, and R14 is a radius ofcurvature of the image-side surface of the seventh lens. It may modifythe astigmatic field curvature.

The optical image capturing system of the present invention satisfiesIN12/f≤3.0, where IN12 is a distance on the optical axis between thefirst lens and the second lens. It may correct chromatic aberration andimprove the performance.

The optical image capturing system of the present invention satisfiesIN67/f≤0.8, where IN67 is a distance on the optical axis between thesixth lens and the seventh lens. It may correct chromatic aberration andimprove the performance.

The optical image capturing system of the present invention satisfies0.1≤(TP1+IN12)/TP2≤10, where TP1 is a central thickness of the firstlens on the optical axis, and TP2 is a central thickness of the secondlens on the optical axis. It may control the sensitivity of manufactureof the system and improve the performance.

The optical image capturing system of the present invention satisfies0.1≤(TP7+IN67)/TP6<10, where TP6 is a central thickness of the sixthlens on the optical axis, TP7 is a central thickness of the seventh lenson the optical axis, and IN67 is a distance between the sixth lens andthe seventh lens. It may control the sensitivity of manufacture of thesystem and improve the performance.

The optical image capturing system of the present invention satisfies0.1≤TP4/(IN34+TP4+IN45)<1, where TP3 is a central thickness of the thirdlens on the optical axis, TP4 is a central thickness of the fourth lenson the optical axis, TP5 is a central thickness of the fifth lens on theoptical axis, IN34 is a distance on the optical axis between the thirdlens and the fourth lens, IN45 is a distance on the optical axis betweenthe fourth lens and the fifth lens, and InTL is a distance between theobject-side surface of the first lens and the image-side surface of theseventh lens. It may fine tune and correct the aberration of theincident rays layer by layer, and reduce the height of the system.

The optical image capturing system satisfies 0 mm≤HVT71≤3 mm; 0mm<HVT72≤6 mm; 0≤HVT71/HVT72; 0 mm≤|SGC71|≤0.5 mm; 0 mm<|SGC72|≤2 mm;and 0<|SGC72|/(|SGC72|+TP7)≤0.9, where HVT71 a distance perpendicular tothe optical axis between the critical point C71 on the object-sidesurface of the seventh lens and the optical axis; HVT72 a distanceperpendicular to the optical axis between the critical point C72 on theimage-side surface of the seventh lens and the optical axis; SGC71 is adistance on the optical axis between a point on the object-side surfaceof the seventh lens where the optical axis passes through and a pointwhere the critical point C71 projects on the optical axis; SGC72 is adistance on the optical axis between a point on the image-side surfaceof the seventh lens where the optical axis passes through and a pointwhere the critical point C72 projects on the optical axis. It is helpfulto correct the off-axis view field aberration.

The optical image capturing system satisfies 0.2≤HVT72/HOI≤0.9, andpreferably satisfies 0.3≤HVT72/HOI≤0.8. It may help to correct theperipheral aberration.

The optical image capturing system satisfies 0≤HVT72/HOS≤0.5, andpreferably satisfies 0.2≤HVT72/HOS≤0.45. It may help to correct theperipheral aberration.

The optical image capturing system of the present invention satisfies0≤SGI711/(SGI711+TP7)≤0.9; 0<SGI721/(SGI721+TP7)≤0.9, and it ispreferable to satisfy 0.1≤SGI711/(SGI711+TP7)≤0.6;0.1≤SGI721/(SGI721+TP7)≤0.6, where SGI711 is a displacement on theoptical axis from a point on the object-side surface of the seventhlens, through which the optical axis passes, to a point where theinflection point on the object-side surface, which is the closest to theoptical axis, projects on the optical axis, and SGI721 is a displacementon the optical axis from a point on the image-side surface of theseventh lens, through which the optical axis passes, to a point wherethe inflection point on the image-side surface, which is the closest tothe optical axis, projects on the optical axis.

The optical image capturing system of the present invention satisfies0≤SGI712/(SGI712+TP7)≤0.9; 0<SGI722/(SGI722+TP7)≤0.9, and it ispreferable to satisfy 0.1≤SGI712/(SGI712+TP7)≤0.6;0.1≤SGI722/(SG1722+TP7)≤0.6, where SGI712 is a displacement on theoptical axis from a point on the object-side surface of the seventhlens, through which the optical axis passes, to a point where theinflection point on the object-side surface, which is the second closestto the optical axis, projects on the optical axis, and SGI722 is adisplacement on the optical axis from a point on the image-side surfaceof the seventh lens, through which the optical axis passes, to a pointwhere the inflection point on the object-side surface, which is thesecond closest to the optical axis, projects on the optical axis.

The optical image capturing system of the present invention satisfies0.001 mm≤|HIF711|≤5 mm; 0.001 mm≤|HIF721|≤5 mm, and it is preferable tosatisfy 0.1 mm≤|HIF711|≤3.5 mm; 1.5 mm<|HIF721|≤3.5 mm, where HIF711 isa distance perpendicular to the optical axis between the inflectionpoint on the object-side surface of the seventh lens, which is theclosest to the optical axis, and the optical axis; HIF721 is a distanceperpendicular to the optical axis between the inflection point on theimage-side surface of the seventh lens, which is the closest to theoptical axis, and the optical axis.

The optical image capturing system of the present invention satisfies0.001 mm≤|HIF712|≤5 mm; 0.001 mm≤|HIF722|≤5 mm, and it is preferable tosatisfy 0.1 mm≤|HIF722|≤3.5 mm; 0.1 mm≤|HIF712|≤3.5 mm, where HIF712 isa distance perpendicular to the optical axis between the inflectionpoint on the object-side surface of the seventh lens, which is thesecond closest to the optical axis, and the optical axis; HIF722 is adistance perpendicular to the optical axis between the inflection pointon the image-side surface of the seventh lens, which is the secondclosest to the optical axis, and the optical axis.

The optical image capturing system of the present invention satisfies0.001 mm≤|HIF713|≤5 mm; 0.001 mm≤|HIF723|≤5 mm, and it is preferable tosatisfy 0.1 mm≤|HIF723|≤3.5 mm; 0.1 mm≤|HIF713|≤3.5 mm, where HIF713 isa distance perpendicular to the optical axis between the inflectionpoint on the object-side surface of the seventh lens, which is the thirdclosest to the optical axis, and the optical axis; HIF723 is a distanceperpendicular to the optical axis between the inflection point on theimage-side surface of the seventh lens, which is the third closest tothe optical axis, and the optical axis.

The optical image capturing system of the present invention satisfies0.001 mm≤|HIF714|≤5 mm; 0.001 mm≤|HIF724|≤5 mm, and it is preferable tosatisfy 0.1 mm≤|HIF724|≤3.5 mm; 0.1 mm≤|HIF714|≤3.5 mm, where HIF714 isa distance perpendicular to the optical axis between the inflectionpoint on the object-side surface of the seventh lens, which is thefourth closest to the optical axis, and the optical axis; HIF724 is adistance perpendicular to the optical axis between the inflection pointon the image-side surface of the seventh lens, which is the fourthclosest to the optical axis, and the optical axis.

In an embodiment, the lenses of high Abbe number and the lenses of lowAbbe number are arranged in an interlaced arrangement that could behelpful for correction of aberration of the system.

An equation of aspheric surface is

z=ch ²/[1+[1−(k+1)c ² h ²]^(0.5)]+A4h ⁴ +A6h ⁶ +A8h ⁸ +A10h ¹⁰ +A12h ¹²+A14h ¹⁴ +A 16h ¹⁶ +A18h ¹⁸ +A20h ²⁰+ . . .   (1)

where z is a depression of the aspheric surface; k is conic constant; cis reciprocal of the radius of curvature; and A4, A6, A8, A10, A12, A14,A16, A18, and A20 are high-order aspheric coefficients.

In the optical image capturing system, the lenses could be made ofplastic or glass. The plastic lenses may reduce the weight and lower thecost of the system, and the glass lenses may control the thermal effectand enlarge the space for arrangement of the refractive power of thesystem. In addition, the opposite surfaces (object-side surface andimage-side surface) of the first to the seventh lenses could be asphericthat can obtain more control parameters to reduce aberration. The numberof aspheric glass lenses could be less than the conventional sphericalglass lenses, which is helpful for reduction of the height of thesystem.

When the lens has a convex surface, which means that the surface isconvex around a position, through which the optical axis passes, andwhen the lens has a concave surface, which means that the surface isconcave around a position, through which the optical axis passes.

The optical image capturing system of the present invention could beapplied in a dynamic focusing optical system. It is superior in thecorrection of aberration and high imaging quality so that it could beallied in lots of fields.

The optical image capturing system of the present invention couldfurther include a driving module to meet different demands, wherein thedriving module can be coupled with the lenses to move the lenses. Thedriving module can be a voice coil motor (VCM), which is used to movethe lens for focusing, or can be an optical image stabilization (OIS)component, which is used to lower the possibility of having the problemof image blurring which is caused by subtle movements of the lens whileshooting.

To meet different requirements, at least one lens among the first lensto the seventh lens of the optical image capturing system of the presentinvention can be a light filter, which filters out light of wavelengthshorter than 500 nm. Such effect can be achieved by coating on at leastone surface of the lens, or by using materials capable of filtering outshort waves to make the lens.

To meet different requirements, the image plane specifically for theinfrared light of the optical image capturing system in the presentinvention can be either flat or curved. If the image plane specificallyfor the infrared light is curved (e.g., a sphere with a radius ofcurvature), the incidence angle required for focusing light on the imageplane specifically for the infrared light can be decreased, which is notonly helpful to shorten the length of the system (TTL), but also helpfulto increase the relative illuminance.

The optical image capturing system of the present invention could beapplied to three-dimensional image capture. A light with specificcharacteristics is projected onto an object, and is reflected by asurface of the object, and is then received and calculated and analyzedby the lens to obtain the distance between each position of the objectand the lens, thereby to determine the information of thethree-dimensional image. The light projection usually uses infrared raysin a specific wavelength to reduce interference, thereby to achievingmore accurate measurement. The detecting way for capturing thethree-dimensional image could be, but not limited to, technologies suchas time-of-flight (TOF) or structured light.

We provide several embodiments in conjunction with the accompanyingdrawings for the best understanding, which are:

First Embodiment

As shown in FIG. 1A and FIG. 1B, an optical image capturing system 10 ofthe first embodiment of the present invention includes, along an opticalaxis from an object side to an image side, a first lens 110, a secondlens 120, a third lens 130, an aperture 100, a fourth lens 140, a fifthlens 150, a sixth lens 160, a seventh lens 170, an infrared rays filter180, an image plane 190 specifically for the infrared light, and animage sensor 192. FIG. 1C shows a modulation transformation of theoptical image capturing system 10 of the first embodiment of the presentapplication in infrared spectrum.

The first lens 110 has negative refractive power and is made of plastic.An object-side surface 112 thereof, which faces the object side, is aconcave aspheric surface, and an image-side surface 114 thereof, whichfaces the image side, is a concave aspheric surface. The object-sidesurface 112 has an inflection point, and the image-side surface 114 hastwo inflection points. A thickness of the first lens 110 on the opticalaxis is TP1, and a thickness of the first lens 110 at the height of ahalf of the entrance pupil diameter (HEP) is denoted by ETP1.

The first lens satisfies SGI111=−0.1110 mm; SGI121=2.7120 mm; TP1=2.2761mm; |SGI111|/(|SGI111|+TP1)=0.0465; |SGI121|/(|SGI121|+TP1)=0.5437,where a displacement on the optical axis from a point on the object-sidesurface of the first lens, through which the optical axis passes, to apoint where the inflection point on the image-side surface, which is theclosest to the optical axis, projects on the optical axis, is denoted bySGI111, and a displacement on the optical axis from a point on theimage-side surface of the first lens, through which the optical axispasses, to a point where the inflection point on the image-side surface,which is the closest to the optical axis, projects on the optical axisis denoted by SGI121.

The first lens satisfies SGI112=0 mm; SGI122=4.2315 mm;|SGI112|/(|SGI112|+TP1)=0; |SGI122|/(|SGI122|+TP1)=0.6502, where adisplacement on the optical axis from a point on the object-side surfaceof the first lens, through which the optical axis passes, to a pointwhere the inflection point on the image-side surface, which is thesecond closest to the optical axis, projects on the optical axis, isdenoted by SGI112, and a displacement on the optical axis from a pointon the image-side surface of the first lens, through which the opticalaxis passes, to a point where the inflection point on the image-sidesurface, which is the second closest to the optical axis, projects onthe optical axis is denoted by SGI122.

The first lens satisfies HIF111=12.8432 mm; HIF111/HOI=1.7127;HIF121=7.1744 mm; HIF121/HOI=0.9567, where a displacement perpendicularto the optical axis from a point on the object-side surface of the firstlens, through which the optical axis passes, to the inflection point,which is the closest to the optical axis is denoted by HIF111, and adisplacement perpendicular to the optical axis from a point on theimage-side surface of the first lens, through which the optical axispasses, to the inflection point, which is the closest to the opticalaxis is denoted by HIF121.

The first lens satisfies HIF112=0 mm; HIF112/HOI=0; HIF122=9.8592 mm;HIF122/HOI=1.3147, where a displacement perpendicular to the opticalaxis from a point on the object-side surface of the first lens, throughwhich the optical axis passes, to the inflection point, which is thesecond closest to the optical axis is denoted by HIF112, and adisplacement perpendicular to the optical axis from a point on theimage-side surface of the first lens, through which the optical axispasses, to the inflection point, which is the second closest to theoptical axis is denoted by HIF122.

The second lens 120 has positive refractive power and is made ofplastic. An object-side surface 122 thereof, which faces the objectside, is a convex aspheric surface, and an image-side surface 124thereof, which faces the image side, is a concave aspheric surface. Athickness of the second lens 120 on the optical axis is TP2, andthickness of the second lens 120 at the height of a half of the entrancepupil diameter (HEP) is denoted by ETP2.

For the second lens, a displacement on the optical axis from a point onthe object-side surface of the second lens, through which the opticalaxis passes, to a point where the inflection point on the image-sidesurface, which is the closest to the optical axis, projects on theoptical axis, is denoted by SGI 211, and a displacement on the opticalaxis from a point on the image-side surface of the second lens, throughwhich the optical axis passes, to a point where the inflection point onthe image-side surface, which is the closest to the optical axis,projects on the optical axis is denoted by SGI 221.

For the second lens, a displacement perpendicular to the optical axisfrom a point on the object-side surface of the second lens, throughwhich the optical axis passes, to the inflection point, which is theclosest to the optical axis is denoted by HIF211, and a displacementperpendicular to the optical axis from a point on the image-side surfaceof the second lens, through which the optical axis passes, to theinflection point, which is the closest to the optical axis is denoted byHIF221.

The third lens 130 has negative refractive power and is made of plastic.An object-side surface 132, which faces the object side, is a convexaspheric surface, and an image-side surface 134, which faces the imageside, is a concave aspheric surface. A thickness of the third lens 130on the optical axis is TP3, and a thickness of the third lens 130 at theheight of a half of the entrance pupil diameter (HEP) is denoted byETP3.

For the third lens 130, SGI311 is a displacement on the optical axisfrom a point on the object-side surface of the third lens, through whichthe optical axis passes, to a point where the inflection point on theobject-side surface, which is the closest to the optical axis, projectson the optical axis, and SGI321 is a displacement on the optical axisfrom a point on the image-side surface of the third lens, through whichthe optical axis passes, to a point where the inflection point on theimage-side surface, which is the closest to the optical axis, projectson the optical axis.

For the third lens 130, SGI312 is a displacement on the optical axisfrom a point on the object-side surface of the third lens, through whichthe optical axis passes, to a point where the inflection point on theobject-side surface, which is the second closest to the optical axis,projects on the optical axis, and SGI322 is a displacement on theoptical axis from a point on the image-side surface of the third lens,through which the optical axis passes, to a point where the inflectionpoint on the object-side surface, which is the second closest to theoptical axis, projects on the optical axis.

For the third lens 130, HIF311 is a distance perpendicular to theoptical axis between the inflection point on the object-side surface ofthe third lens, which is the closest to the optical axis, and theoptical axis; HIF321 is a distance perpendicular to the optical axisbetween the inflection point on the image-side surface of the thirdlens, which is the closest to the optical axis, and the optical axis.

For the third lens 130, HIF312 is a distance perpendicular to theoptical axis between the inflection point on the object-side surface ofthe third lens, which is the second closest to the optical axis, and theoptical axis; HIF322 is a distance perpendicular to the optical axisbetween the inflection point on the image-side surface of the thirdlens, which is the second closest to the optical axis, and the opticalaxis.

The fourth lens 140 has positive refractive power and is made ofplastic. An object-side surface 142, which faces the object side, is aconvex aspheric surface, and an image-side surface 144, which faces theimage side, is a convex aspheric surface. The object-side surface 142has an inflection point. A thickness of the fourth lens 140 on theoptical axis is TP4, and a thickness of the fourth lens 140 at theheight of a half of the entrance pupil diameter (HEP) is denoted byETP4.

The fourth lens 140 satisfies SGI411=0.0018 mm;|SGI411|/(|SGI411|+TP4)=0.0009, where SGI411 is a displacement on theoptical axis from a point on the object-side surface of the fourth lens,through which the optical axis passes, to a point where the inflectionpoint on the object-side surface, which is the closest to the opticalaxis, projects on the optical axis, and SGI421 is a displacement on theoptical axis from a point on the image-side surface of the fourth lens,through which the optical axis passes, to a point where the inflectionpoint on the image-side surface, which is the closest to the opticalaxis, projects on the optical axis.

For the fourth lens 140, SGI412 is a displacement on the optical axisfrom a point on the object-side surface of the fourth lens, throughwhich the optical axis passes, to a point where the inflection point onthe object-side surface, which is the second closest to the opticalaxis, projects on the optical axis, and SGI422 is a displacement on theoptical axis from a point on the image-side surface of the fourth lens,through which the optical axis passes, to a point where the inflectionpoint on the object-side surface, which is the second closest to theoptical axis, projects on the optical axis.

The fourth lens 140 further satisfies HIF411=0.7191 mm;HIF411/HOI=0.0959, where HIF411 is a distance perpendicular to theoptical axis between the inflection point on the object-side surface ofthe fourth lens, which is the closest to the optical axis, and theoptical axis; HIF421 is a distance perpendicular to the optical axisbetween the inflection point on the image-side surface of the fourthlens, which is the closest to the optical axis, and the optical axis.

For the fourth lens 140, HIF412 is a distance perpendicular to theoptical axis between the inflection point on the object-side surface ofthe fourth lens, which is the second closest to the optical axis, andthe optical axis; HIF422 is a distance perpendicular to the optical axisbetween the inflection point on the image-side surface of the fourthlens, which is the second closest to the optical axis, and the opticalaxis.

The fifth lens 150 has positive refractive power and is made of plastic.An object-side surface 152, which faces the object side, is a concaveaspheric surface, and an image-side surface 154, which faces the imageside, is a convex aspheric surface. The object-side surface 152 and theimage-side surface 154 both have an inflection point. A thickness of thefifth lens 150 on the optical axis is TPS, and a thickness of the fifthlens 150 at the height of a half of the entrance pupil diameter (HEP) isdenoted by ETPS.

The fifth lens 150 satisfies SGI511=−0.1246 mm; SGI521=−2.1477 mm;|SGI511|/(|SGI511|+TP5)=0.0284; |SG1521|/(|SG1521|+TP5)=0.3346, whereSGI511 is a displacement on the optical axis from a point on theobject-side surface of the fifth lens, through which the optical axispasses, to a point where the inflection point on the object-sidesurface, which is the closest to the optical axis, projects on theoptical axis, and SGI521 is a displacement on the optical axis from apoint on the image-side surface of the fifth lens, through which theoptical axis passes, to a point where the inflection point on theimage-side surface, which is the closest to the optical axis, projectson the optical axis.

For the fifth lens 150, SGI512 is a displacement on the optical axisfrom a point on the object-side surface of the fifth lens, through whichthe optical axis passes, to a point where the inflection point on theobject-side surface, which is the second closest to the optical axis,projects on the optical axis, and SGI522 is a displacement on theoptical axis from a point on the image-side surface of the fifth lens,through which the optical axis passes, to a point where the inflectionpoint on the object-side surface, which is the second closest to theoptical axis, projects on the optical axis.

The fifth lens 150 further satisfies HIF511=3.8179 mm; HIF521=4.5480 mm;HIF511/HOI=0.5091; HIF521/HOI=0.6065, where HIF511 is a distanceperpendicular to the optical axis between the inflection point on theobject-side surface of the fifth lens, which is the closest to theoptical axis, and the optical axis; HIF521 is a distance perpendicularto the optical axis between the inflection point on the image-sidesurface of the fifth lens, which is the closest to the optical axis, andthe optical axis.

For the fifth lens 150, HIF512 is a distance perpendicular to theoptical axis between the inflection point on the object-side surface ofthe fifth lens, which is the second closest to the optical axis, and theoptical axis; HIF522 is a distance perpendicular to the optical axisbetween the inflection point on the image-side surface of the fifthlens, which is the second closest to the optical axis, and the opticalaxis.

The sixth lens 160 has negative refractive power and is made of plastic.An object-side surface 162, which faces the object side, is a convexaspheric surface, and an image-side surface 164, which faces the imageside, is a concave aspheric surface. The object-side surface 162 and theimage-side surface 164 both have an inflection point. Whereby, theincident angle of each view field entering the sixth lens 160 can beeffectively adjusted to improve aberration. A thickness of the sixthlens 160 on the optical axis is TP6, and a thickness of the sixth lens160 at the height of a half of the entrance pupil diameter (HEP) isdenoted by ETP6.

The sixth lens 160 satisfies SGI611=0.3208 mm; SGI621=0.5937 mm;|SGI611|/(|SGI611|+TP6)=0.5167; |SGI621|/(|SGI621|+TP6)=0.6643, whereSGI611 is a displacement on the optical axis from a point on theobject-side surface of the sixth lens, through which the optical axispasses, to a point where the inflection point on the object-sidesurface, which is the closest to the optical axis, projects on theoptical axis, and SGI621 is a displacement on the optical axis from apoint on the image-side surface of the sixth lens, through which theoptical axis passes, to a point where the inflection point on theimage-side surface, which is the closest to the optical axis, projectson the optical axis.

The sixth lens 160 further satisfies HIF611=1.9655 mm; HIF621=2.0041 mm;HIF611/HOI=0.2621; HIF621/HOI=0.2672, where HIF611 is a distanceperpendicular to the optical axis between the inflection point on theobject-side surface of the sixth lens, which is the closest to theoptical axis, and the optical axis; HIF621 is a distance perpendicularto the optical axis between the inflection point on the image-sidesurface of the sixth lens, which is the closest to the optical axis, andthe optical axis.

The seventh lens 170 has positive refractive power and is made ofplastic. An object-side surface 172, which faces the object side, is aconvex aspheric surface, and an image-side surface 174, which faces theimage side, is a concave aspheric surface. The object-side surface 172and the image-side surface 174 both have an inflection point. Athickness of the seventh lens 170 on the optical axis is TP7, and athickness of the seventh lens 170 at the height of a half of theentrance pupil diameter (HEP) is denoted by ETP7.

The seventh lens 170 satisfies SGI711=0.5212 mm; SGI721=0.5668 mm;|SGI711|/(|SGI711|+TP7)=0.3179; |SGI721|/(|SGI721|+TP7)=0.3364, whereSGI711 is a displacement on the optical axis from a point on theobject-side surface of the seventh lens, through which the optical axispasses, to a point where the inflection point on the object-sidesurface, which is the closest to the optical axis, projects on theoptical axis, and SGI721 is a displacement on the optical axis from apoint on the image-side surface of the seventh lens, through which theoptical axis passes, to a point where the inflection point on theimage-side surface, which is the closest to the optical axis, projectson the optical axis.

The seventh lens 170 further satisfies HIF711=1.6707 mm; HIF721=1.8616mm; HIF711/HOI=0.2228; HIF721/HOI=0.2482, where HIF711 is a distanceperpendicular to the optical axis between the inflection point on theobject-side surface of the seventh lens, which is the closest to theoptical axis, and the optical axis; HIF721 is a distance perpendicularto the optical axis between the inflection point on the image-sidesurface of the seventh lens, which is the closest to the optical axis,and the optical axis.

A distance in parallel with the optical axis between a coordinate pointat a height of ½ HEP on the object-side surface of the first lens 110and the image plane specifically for the infrared light is ETL, and adistance in parallel with the optical axis between the coordinate pointat the height of ½ HEP on the object-side surface of the first lens 110and a coordinate point at a height of ½ HEP on the image-side surface ofthe seventh lens 140 is EIN, which satisfies: ETL=26.980 mm; EIN=24.999mm; EIN/ETL=0.927.

The optical image capturing system of the first embodiment satisfies:ETP1=2.470 mm; ETP2=5.144 mm; ETP3=0.898 mm; ETP4=1.706 mm; ETP5=3.901mm; ETP6=0.528 mm; ETP7=1.077 mm The sum of the aforementioned ETP1 toETP7 is SETP, wherein SETP=15.723 mm In addition, TP1=2.276 mm;TP2=5.240 mm; TP3=0.837 mm; TP4=2.002 mm; TPS=4.271 mm; TP6=0.300 mm;TP7=1.118 mm The sum of the aforementioned TP1 to TP7 is STP, whereinSTP=16.044 mm In addition, SETP/STP=0.980, and SETP/EIN=0.629.

In order to enhance the ability of correcting aberration and to lowerthe difficulty of manufacturing at the same time, the ratio between thethickness (ETP) at the height of a half of the entrance pupil diameter(HEP) and the thickness (TP) of any lens on the optical axis (i.e.,ETP/TP) in the optical image capturing system of the first embodiment isparticularly controlled, which satisfies: ETP1/TP1=1.085;ETP2/TP2=0.982; ETP3/TP3=1.073; ETP4/TP4=0.852; ETPS/TP5=0.914;ETP6/TP6=1.759; ETP7/TP7=0.963.

In order to enhance the ability of correcting aberration, lower thedifficulty of manufacturing, and “slightly shortening” the length of theoptical image capturing system at the same time, the ratio between thehorizontal distance (ED) between two neighboring lenses at the height ofa half of the entrance pupil diameter (HEP) and the parallel distance(IN) between these two neighboring lens on the optical axis (i.e.,ED/IN) in the optical image capturing system of the first embodiment isparticularly controlled, which satisfies: the horizontal distancebetween the first lens 110 and the second lens 120 at the height of ahalf of the entrance pupil diameter (HEP) is denoted by ED12, whereinED12=4.474 mm; the horizontal distance between the second lens 120 andthe third lens 130 at the height of a half of the entrance pupildiameter (HEP) is denoted by ED23, wherein ED23=0.349 mm; the horizontaldistance between the third lens 130 and the fourth lens 140 at theheight of a half of the entrance pupil diameter (HEP) is denoted byED34, wherein ED34=1.660 mm; the horizontal distance between the fourthlens 140 and the fifth lens 150 at the height of a half of the entrancepupil diameter (HEP) is denoted by ED45, wherein ED45=1.794 mm; thehorizontal distance between the fifth lens 150 and the sixth lens 160 atthe height of a half of the entrance pupil diameter (HEP) is denoted byED56, wherein ED56=0.714 mm; the horizontal distance between the sixthlens 160 and the seventh lens 170 at the height of a half of theentrance pupil diameter (HEP) is denoted by ED67, wherein ED67=0.284 mmThe sum of the aforementioned ED12 to ED67 is SED, wherein SED=9.276 mm

The horizontal distance between the first lens 110 and the second lens120 on the optical axis is denoted by IN12, wherein IN12=4.552mm, andED12/IN12=0.983. The horizontal distance between the second lens 120 andthe third lens 130 on the optical axis is denoted by IN23, whereinIN23=0.162 mm, and ED23/IN23=2.153. The horizontal distance between thethird lens 130 and the fourth lens 140 on the optical axis is denoted byIN34, wherein IN34=1.927 mm, and ED34/IN34=0.862. The horizontaldistance between the fourth lens 140 and the fifth lens 150 on theoptical axis is denoted by IN45, wherein IN45=1.515 mm, andED45/IN45=1.184. The horizontal distance between the fifth lens 150 andthe sixth lens 160 on the optical axis is denoted by IN56, whereinIN56=0.050 mm, and ED56/IN56=14.285. The horizontal distance between thesixth lens 160 and the seventh lens 170 on the optical axis is denotedby IN67, wherein IN67=0.211 mm, and ED67/IN67=1.345. The sum of theaforementioned IN12 to IN67 is denoted by SIN, wherein SIN=8.418, andSED/SIN=1.102.

The optical image capturing system of the first embodiment satisfies:ED12/ED23=12.816; ED23/ED34=0.210; ED34/ED45=0.925; ED45/ED56=2.512;ED56/ED67=2.512; IN12/IN23=28.080; IN23/IN34=0.084; IN34/IN45=1.272;IN45/IN56=30.305; IN56/IN67=0.236.

The horizontal distance in parallel with the optical axis between acoordinate point at the height of ½ HEP on the image-side surface of theseventh lens 170 and image plane specifically for the infrared light isdenoted by EBL, wherein EBL=1.982 mm The horizontal distance in parallelwith the optical axis between the point on the image-side surface of theseventh lens 170 where the optical axis passes through and the imageplane specifically for the infrared light is denoted by BL, whereinBL=2.517 mm The optical image capturing system of the first embodimentsatisfies: EBL/BL=0.7874. The horizontal distance in parallel with theoptical axis between the coordinate point at the height of ½ HEP on theimage-side surface of the seventh lens 170 and the infrared rays filter180 is denoted by EIR, wherein EIR=0.865 mm The horizontal distance inparallel with the optical axis between the point on the image-sidesurface of the seventh lens 170 where the optical axis passes throughand the infrared rays filter 180 is denoted by PIR, wherein PIR=1.400mm, and it satisfies: EIR/PIR=0.618.

The description below and the features related to inflection points areobtained based on main reference wavelength of 555 nm.

The infrared rays filter 180 is made of glass and between the seventhlens 170 and the image plane 190 specifically for the infrared light.The infrared rays filter 180 gives no contribution to the focal lengthof the system.

The optical image capturing system 10 of the first embodiment has thefollowing parameters, which are f=4.3019 mm; f/HEP=1.2; HAF=59.9968degrees; and tan(HAF)=1.7318, where f is a focal length of the system;HAF is a half of the maximum field angle; and HEP is an entrance pupildiameter.

The parameters of the lenses of the first embodiment are f1=−14.5286 mm;|f/f1|=0.2961; f7=8.2933; |f1|>f7; |f1/f7|=1.7519, where f1 is a focallength of the first lens 110; and f7 is a focal length of the seventhlens 170.

The first embodiment further satisfies|f2|+|f3|+|f4|+|f5|+|f6|=144.7494; |f1|+|f7|=22.8219 and|f2|+|f3|+|f4|+|f5|+|f6|>|f1|+|f7|, where f2 is a focal length of thesecond lens 120, f3 is a focal length of the third lens 130, f4 is afocal length of the fourth lens 140, f5 is a focal length of the fifthlens 150, f6 is a focal length of the sixth lens 160, and f7 is a focallength of the seventh lens 170.

The optical image capturing system 10 of the first embodiment furthersatisfies ΣPPR=f/f2+f/f4+f/f5+f/f7=1.7384; ΣNPR=f/f1+f/f3+f/f6=−0.9999;ΣPPR/|ΣNPR|=1.7386; |f/f2|=0.1774; |f/f3|=0.0443; |f/f4|=0.4411;|f/f5|=0.6012; |f/f6|=0.6595; |f/f7|=0.5187, where PPR is a ratio of afocal length f of the optical image capturing system to a focal lengthfp of each of the lenses with positive refractive power; and NPR is aratio of a focal length f of the optical image capturing system to afocal length fn of each of lenses with negative refractive power.

The optical image capturing system 10 of the first embodiment furthersatisfies InTL+BFL=HOS; HOS=26.9789 mm; HOI=7.5 mm; HOS/HOI=3.5977;HOS/f=6.2715; InS=12.4615 mm; and InS/HOS=0.4619, where InTL is adistance between the object-side surface 112 of the first lens 110 andthe image-side surface 174 of the seventh lens 170; HOS is a height ofthe image capturing system, i.e. a distance between the object-sidesurface 112 of the first lens 110 and the image plane specifically forthe infrared light 190; InS is a distance between the aperture 100 andthe image plane specifically for the infrared light 190; HOI is a halfof a diagonal of an effective sensing area of the image sensor 192,i.e., the maximum image height; and BFL is a distance between theimage-side surface 174 of the seventh lens 170 and the image planespecifically for the infrared light 190.

The optical image capturing system 10 of the first embodiment furthersatisfies ΣTP=16.0446 mm; and ΣTP/InTL=0.6559, where ΣTP is a sum of thethicknesses of the lenses 110-150 with refractive power. It is helpfulfor the contrast of image and yield rate of manufacture and provides asuitable back focal length for installation of other elements.

The optical image capturing system 10 of the first embodiment furthersatisfies |R1/R2|=129.9952, where R1 is a radius of curvature of theobject-side surface 112 of the first lens 110, and R2 is a radius ofcurvature of the image-side surface 114 of the first lens 110. Itprovides the first lens with a suitable positive refractive power toreduce the increase rate of the spherical aberration.

The optical image capturing system 10 of the first embodiment furthersatisfies (R13-R14)/(R13+R14)=−0.0806, where R13 is a radius ofcurvature of the object-side surface 172 of the seventh lens 170, andR14 is a radius of curvature of the image-side surface 174 of theseventh lens 170. It may modify the astigmatic field curvature.

The optical image capturing system 10 of the first embodiment furthersatisfies ΣPP=f2+f4+f5+f7=49.4535 mm; and f4/(f2+f4+f5+f7)=0.1972, whereΣPP is a sum of the focal lengths fp of each lens with positiverefractive power. It is helpful to share the positive refractive powerof the fourth lens 140 to other positive lenses to avoid the significantaberration caused by the incident rays.

The optical image capturing system 10 of the first embodiment furthersatisfies ΣNP=f1+f3+f6=−118.1178 mm; and f1/(f1+f3+f6)=0.1677, where ΣNPis a sum of the focal lengths fn of each lens with negative refractivepower. It is helpful to share the negative refractive power of the firstlens 110 to the other negative lens, which avoid the significantaberration caused by the incident rays.

The optical image capturing system 10 of the first embodiment furthersatisfies IN12=4.5524 mm; IN12/f=1.0582, where IN12 is a distance on theoptical axis between the first lens 110 and the second lens 120. It maycorrect chromatic aberration and improve the performance.

The optical image capturing system 10 of the first embodiment furthersatisfies TP1=2.2761mm; TP2=0.2398 mm; and (TP1+IN12)/TP2=1.3032, whereTP1 is a central thickness of the first lens 110 on the optical axis,and TP2 is a central thickness of the second lens 120 on the opticalaxis. It may control the sensitivity of manufacture of the system andimprove the performance

The optical image capturing system 10 of the first embodiment furthersatisfies TP6=0.3000 mm; TP7=1.1182 mm; and (TP7+IN67)/TP6=4.4322, whereTP6 is a central thickness of the sixth lens 160 on the optical axis,TP7 is a central thickness of the seventh lens 170 on the optical axis,and IN67 is a distance on the optical axis between the sixth lens 160and the seventh lens 170. It may control the sensitivity of manufactureof the system and lower the total height of the system.

The optical image capturing system 10 of the first embodiment furthersatisfies TP3=0.8369 mm; TP4=2.0022 mm; TP5=4.2706 mm; IN34=1.9268 mm;IN45=1.5153 mm; and TP4/(IN34+TP4+IN45)=0.3678, where TP3 is a centralthickness of the third lens 130 on the optical axis, TP4 is a centralthickness of the fourth lens 140 on the optical axis, TP5 is a centralthickness of the fifth lens 150 on the optical axis; IN34 is a distanceon the optical axis between the third lens 130 and the fourth lens 140;IN45 is a distance on the optical axis between the fourth lens 140 andthe fifth lens 150; InTL is a distance between the object-side surface112 of the first lens 110 and the image-side surface 174 of the seventhlens 170. It may control the sensitivity of manufacture of the systemand lower the total height of the system.

The optical image capturing system 10 of the first embodiment furthersatisfies InRS61=−0.7823 mm; InRS62=−0.2166 mm; and |InRS62|/TP6=0.722,where InRS61 is a displacement from a point on the object-side surface162 of the sixth lens 160 passed through by the optical axis to a pointon the optical axis where a projection of the maximum effective semidiameter of the object-side surface 162 of the sixth lens 160 ends;InRS62 is a displacement from a point on the image-side surface 164 ofthe sixth lens 160 passed through by the optical axis to a point on theoptical axis where a projection of the maximum effective semi diameterof the image-side surface 164 of the sixth lens 160 ends; and TP6 is acentral thickness of the sixth lens 160 on the optical axis. It ishelpful for manufacturing and shaping of the lenses and is helpful toreduce the size.

The optical image capturing system 10 of the first embodiment furthersatisfies HVT61=3.3498 mm; HVT62=3.9860 mm; and HVT61/HVT62=0.8404,where HVT61 is a distance perpendicular to the optical axis between thecritical point on the object-side surface 162 of the sixth lens 160 andthe optical axis; and HVT62 is a distance perpendicular to the opticalaxis between the critical point on the image-side surface 164 of thesixth lens 160 and the optical axis.

The optical image capturing system 10 of the first embodiment furthersatisfies InRS71=−0.2756 mm; InRS72=−0.0938 mm; and |InRS72|/TP7=0.0839,where InRS71 is a displacement from a point on the object-side surface172 of the seventh lens 170 passed through by the optical axis to apoint on the optical axis where a projection of the maximum effectivesemi diameter of the object-side surface 172 of the seventh lens 170ends; InRS72 is a displacement from a point on the image-side surface174 of the seventh lens 170 passed through by the optical axis to apoint on the optical axis where a projection of the maximum effectivesemi diameter of the image-side surface 174 of the seventh lens 170ends; and TP7 is a central thickness of the seventh lens 170 on theoptical axis. It is helpful for manufacturing and shaping of the lensesand is helpful to reduce the size.

The optical image capturing system 10 of the first embodiment satisfiesHVT71=3.6822 mm; HVT72=4.0606 mm; and HVT71/HVT72=0.9068, where HVT71 isa distance perpendicular to the optical axis between the critical pointon the object-side surface 172 of the seventh lens 170 and the opticalaxis; and HVT72 is a distance perpendicular to the optical axis betweenthe critical point on the image-side surface 174 of the seventh lens 170and the optical axis.

The optical image capturing system 10 of the first embodiment satisfiesHVT72/HOI=0.5414. It is helpful for correction of the aberration of theperipheral view field of the optical image capturing system.

The optical image capturing system 10 of the first embodiment satisfiesHVT72/HOS=0.1505. It is helpful for correction of the aberration of theperipheral view field of the optical image capturing system.

The second lens 120, the third lens 130, and the seventh lens 170 havenegative refractive power. The optical image capturing system 10 of thefirst embodiment further satisfies 1≤NA7/NA2, where NA2 is an Abbenumber of the second lens 120; NA3 is an Abbe number of the third lens130; and NA7 is an Abbe number of the seventh lens 170. It may correctthe aberration of the optical image capturing system.

The optical image capturing system 10 of the first embodiment furthersatisfies |TDT|=2.5678%; |ODT|=2.1302%, where TDT is TV distortion; andODT is optical distortion.

For the optical image capturing system of the first embodiment, thevalues of MTF in the spatial frequency of 55 cycles/mm at the opticalaxis, 0.3 field of view, and 0.7 field of view of visible light on animage plane specifically for the infrared light are respectively denotedby MTFE0, MTFE3, and MTFE7, wherein MTFE0 is around 0.35, MTFE3 isaround 0.14, and MTEF7 is around 0.28; the values of MTF in the spatialfrequency of 110 cycles/mm at the optical axis, 0.3 field of view, and0.7 field of view of visible light on an image plane specifically forthe infrared light are respectively denoted by MTFQ0, MTFQ3, and MTFQ7,wherein MTFQ0 is around 0.126, MTFQ3 is around 0.075, and MTFQ7 isaround 0.177; the values of modulation transfer function (MTF) in thespatial frequency of 220 cycles/mm at the optical axis, 0.3 field ofview, and 0.7 field of view on an image plane specifically for theinfrared light are respectively denoted by MTFH0, MTFH3, and MTFH7,wherein MTFH0 is around 0.01, MTFH3 is around 0.01, and MTFH7 is around0.01.

For the optical image capturing system of the first embodiment, when theinfrared of wavelength of 850 nm focuses on the image plane specificallyfor the infrared light, the values of MTF in spatial frequency (55cycles/mm) at the optical axis, 0.3 HOI, and 0.7 HOI on an image planespecifically for the infrared light are respectively denoted by MTFIO,MTFI3, and MTFI7, wherein MTFIO is around 0.01, MTFI3 is around 0.01,and MTFI7 is around 0.01.

The parameters of the lenses of the first embodiment are listed in Table1 and Table 2.

TABLE 1 f = 4.3019 mm; f/HEP = 1.2; HAF = 59.9968 deg Focal ThicknessRefractive Abbe length Surface Radius of curvature (mm) (mm) Materialindex number (mm) 0 Object plane infinity 1 1^(st) lens −1079.4999642.276 plastic 1.565 58.00 −14.53 2 8.304149657 4.552 3 2^(nd) lens14.39130913 5.240 plastic 1.650 21.40 24.25 4 130.0869482 0.162 5 3^(rd)lens 8.167310118 0.837 plastic 1.650 21.40 −97.07 6 6.944477468 1.450 7Aperture plane 0.477 8 4^(th) lens 121.5965254 2.002 plastic 1.565 58.009.75 9 −5.755749302 1.515 10 5^(th) lens −86.27705938 4.271 plastic1.565 58.00 7.16 11 −3.942936258 0.050 12 6^(th) lens 4.867364751 0.300plastic 1.650 21.40 −6.52 13 2.220604983 0.211 14 7^(th) lens1.892510651 1.118 plastic 1.650 21.40 8.29 15 2.224128115 1.400 16Infrared rays plane 0.200 BK_7 1.517 64.2 filter 17 plane 0.917 18 Imageplane plane 0 specifically for infrared light Reference wavelength(d-line): 555 mm.

TABLE 2 Coefficients of the aspheric surfaces Surface 1 2 3 4 5 6 8 k2.500000E+01 −4.711931E−01 1.531617E+00 −1.153034E+01  −2.915013E+00 4.886991E+00 −3.459463E+01 A4 5.236918E−06 −2.117558E−04 7.146736E−054.353586E−04 5.793768E−04 −3.756697E−04  −1.292614E−03 A6 −3.014384E−08 −1.838670E−06 2.334364E−06 1.400287E−05 2.112652E−04 3.901218E−04−1.602381E−05 A8 −2.487400E−10   9.605910E−09 −7.479362E−08 −1.688929E−07  −1.344586E−05  −4.925422E−05  −8.452359E−06 A101.170000E−12 −8.256000E−11 1.701570E−09 3.829807E−08 1.000482E−064.139741E−06  7.243999E−07 A12 0.000000E+00  0.000000E+00 0.000000E+000.000000E+00 0.000000E+00 0.000000E+00  0.000000E+00 A14 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 Surface 9 10 11 12 13 14 15 k −7.549291E+00 −5.000000E+01 −1.740728E+00  −4.709650E+00 −4.509781E+00 −3.427137E+00 −3.215123E+00 A4 −5.583548E−03 1.240671E−04 6.467538E−04 −1.872317E−03 −8.967310E−04−3.189453E−03 −2.815022E−03  A6  1.947110E−04 −4.949077E−05 −4.981838E−05  −1.523141E−05 −2.688331E−05 −1.058126E−05 1.884580E−05 A8−1.486947E−05 2.088854E−06 9.129031E−07 −2.169414E−06 −8.324958E−07 1.760103E−06 −1.017223E−08  A10 −6.501246E−08 −1.438383E−08 7.108550E−09 −2.308304E−08 −6.184250E−09 −4.730294E−08 3.660000E−12 A12 0.000000E+00 0.000000E+00 0.000000E+00  0.000000E+00  0.000000E+00 0.000000E+00 0.000000E+00 A14  0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00  0.000000E+00  0.000000E+00 0.000000E+00

The detail parameters of the first embodiment are listed in Table 1, inwhich the unit of the radius of curvature, thickness, and focal lengthare millimeter, and surface 0-10 indicates the surfaces of all elementsin the system in sequence from the object side to the image side. Table2 is the list of coefficients of the aspheric surfaces, in which A1-A20indicate the coefficients of aspheric surfaces from the first order tothe twentieth order of each aspheric surface. The following embodimentshave the similar diagrams and tables, which are the same as those of thefirst embodiment, so we do not describe it again.

Second Embodiment

As shown in FIG. 2A and FIG. 2B, an optical image capturing system 20 ofthe second embodiment of the present invention includes, along anoptical axis from an object side to an image side, a first lens 210, anaperture 200, a second lens 220, a third lens 230, a fourth lens 240, afifth lens 250, a sixth lens 260, a seventh lens 270, an infrared raysfilter 280, an image plane 290, and an image sensor 292. FIG. 2C shows amodulation transformation of the optical image capturing system 20 ofthe second embodiment of the present application in infrared spectrum.

The first lens 210 has positive refractive power and is made of plastic.An object-side surface 212 thereof, which faces the object side, is aconvex aspheric surface, and an image-side surface 214 thereof, whichfaces the image side, is a concave aspheric surface. The object-sidesurface 212 has an inflection point.

The second lens 220 has negative refractive power and is made ofplastic. An object-side surface 222 thereof, which faces the objectside, is a concave aspheric surface, and an image-side surface 224thereof, which faces the image side, is a concave aspheric surface. Theobject-side surface 222 and the image-side surface 224 both have aninflection point.

The third lens 230 has positive refractive power and is made of plastic.An object-side surface 232, which faces the object side, is a convexaspheric surface, and an image-side surface 234, which faces the imageside, is a concave aspheric surface. The image-side surface 234 has aninflection point.

The fourth lens 240 has positive refractive power and is made ofplastic. An object-side surface 242, which faces the object side, is aconvex aspheric surface, and an image-side surface 244, which faces theimage side, is a concave aspheric surface. The object-side surface 242has an inflection point, and the image-side surface 244 has aninflection point.

The fifth lens 250 has positive refractive power and is made of plastic.An object-side surface 252, which faces the object side, is a convexaspheric surface, and an image-side surface 254, which faces the imageside, is a concave aspheric surface. The object-side surface 252 has aninflection point, and the image-side surface 254 has two inflectionpoints.

The sixth lens 260 has positive refractive power and is made of plastic.An object-side surface 262, which faces the object side, is a convexaspheric surface, and an image-side surface 264, which faces the imageside, is a concave aspheric surface. The object-side surface 262 has twoinflection points, and the image-side surface 264 has two inflectionpoints. Whereby, the incident angle of each view field entering thesixth lens 260 can be effectively adjusted to improve aberration.

The seventh lens 270 has negative refractive power and is made ofplastic. An object-side surface 272, which faces the object side, is aconcave aspheric surface, and an image-side surface 274, which faces theimage side, is a concave aspheric surface. It may help to shorten theback focal length to keep small in size. In addition, the object-sidesurface 272 and the image-side surface 274 both have an inflectionpoint, which may reduce an incident angle of the light of an off-axisfield of view and correct the aberration of the off-axis field of view.

The infrared rays filter 280 is made of glass and between the seventhlens 270 and the image plane specifically for the infrared light 290.The infrared rays filter 280 gives no contribution to the focal lengthof the system.

The parameters of the lenses of the second embodiment are listed inTable 3 and Table 4.

TABLE 3 f = 8.6556 mm; f/HEP = 1.4; HAF = 20.5346 deg Focal ThicknessRefractive Abbe length Surface Radius of curvature (mm) (mm) Materialindex number (mm) 0 Object 1E+18 1E+18 1 1^(st) lens 3.608758597 1.959plastic 1.544 56.09 8.454 2 13.8060016 0.490 3 Aperture 1E+18 0.150 42^(nd) lens −10.34008735 0.400 plastic 1.515 56.55 −9.136 5 8.6547991180.050 6 3^(rd) lens 4.039776435 0.436 plastic 1.661 20.39 22.206 75.362440883 0.050 8 4^(th) lens 2.914317723 0.473 plastic 1.5441 56.0909091.860 9 2.749936463 0.352 10 5^(th) lens 2.873983403 0.533 plastic1.661 20.39 13.208 11 3.995948109 1.154 12 6^(th) lens 17.9817901 0.417plastic 1.661 20.39 100.229 13 24.57331161 1.209 14 7^(th) lens−29.18117929 0.542 plastic 1.636 23.89 −9.731 15 7.792296656 0.171 16Infrared rays 1E+18 0.215 BK_7 1.517 64.2 filter 17 1E+18 0.999 18 Imageplane 1E+18 0.001 specifically for infrared light Reference wavelength:940 nm; the position of blocking light: the effective half diameter ofthe clear aperture of the first surface is 3.437 mm; the effective halfdiameter of the clear aperture of the fifth surface is 2.950 mm; theeffective half diameter of the clear aperture of the fifteenth surfaceis 2.970 mm; in the current embodiment, the first aperture is used forcalculating the aperture value, and the exit pupil diameter of theimage-side surface of the seventh lens is used as HXP

TABLE 4 Coefficients of the aspheric surfaces Surface 1 2 4 5 6 7 8 k−6.020435E−01 −3.021045E+00 −3.926596E+01 −2.205177E+01 −1.813067E+00 2.043846E+00 −1.299930E+00  A4 −1.665998E−04 −2.865732E−03−4.016547E−03 −2.327750E−03  1.086065E−02  1.594973E−02 4.428747E−03 A6 3.563534E−05  8.727019E−04  4.675536E−03  1.503727E−03 −1.841949E−03−1.722523E−03 5.600680E−05 A8  1.472237E−05 −1.534967E−04 −1.124443E−03−2.608390E−04 −3.422804E−04 −2.442256E−03 −9.417032E−04  A10−5.304019E−06  2.881569E−05  1.769086E−04  1.070410E−05  1.340704E−04 9.160450E−04 1.480627E−04 A12  7.575763E−07 −3.136218E−06 −1.779748E−05 8.843343E−07 −1.534288E−05 −1.379784E−04 2.859123E−06 A14 −4.909059E−08 1.537957E−07  1.011806E−06 −5.694768E−08  6.102273E−07  9.285353E−06−2.687307E−06  A16  1.080216E−09 −2.772807E−09 −2.452775E−08−4.585678E−10  2.334429E−09 −2.244288E−07 1.820267E−07 Surface 9 10 1112 13 14 15 k −3.444200E+00  −5.441012E+00  2.299813E−01 −8.999827E+01−3.396539E+01  8.999091E+01 −2.361751E+01 A4 4.716089E−03 8.913614E−03−1.707338E−02   1.419255E−03 −5.810072E−03 −4.010619E−02 −3.472495E−02A6 5.746184E−04 −5.502425E−03  1.850544E−03 −6.280987E−03 −3.099095E−04 8.903957E−03  7.861744E−03 A8 4.056198E−05 3.956161E−04 −1.963177E−03  3.301723E−03  3.772465E−05 −2.222118E−03 −1.724419E−03 A10−4.277343E−04  2.175856E−04 7.910576E−04 −1.513522E−03 −3.210133E−05 6.986359E−04  3.179609E−04 A12 1.254760E−04 −4.394603E−05 −1.177970E−04   4.042532E−04  1.202548E−05 −1.361232E−04 −3.865119E−05A14 −1.438544E−05  1.726265E−06 3.472448E−06 −5.898805E−05 −3.410486E−06 1.263136E−05  2.473662E−06 A16 6.053910E−07 6.027942E−08 3.380357E−07 3.479231E−06  3.016620E−07 −4.356463E−07 −6.225282E−08

An equation of the aspheric surfaces of the second embodiment is thesame as that of the first embodiment, and the definitions are the sameas well.

The exact parameters of the second embodiment based on Table 3 and Table4 are listed in the following table:

Second embodiment (Reference wavelength: 940 nm) MTFE0 MTFE3 MTFE7 MTFQ0MTFQ3 MTFQ7 0.88  0.67  0.52  0.74  0.38  0.39  ETP1 ETP2 ETP3 ETP4 ETP5ETP6 1.444 0.539 0.522 0.303 0.598 0.638 ETP7 ETL EBL EIN EIR PIR 0.8278.938 1.616 7.321 0.401 0.171 EIN/ETL SETP/EIN EIR/PIR SETP STP SETP/STP0.819 0.665 2.352 4.871 4.760 1.023 ETP1/TP1 ETP2/TP2 ETP3/TP3 ETP4/TP4ETP5/TP5 ETP6/TP6 0.737 1.347 1.195 0.641 1.122 1.530 ETP7/TP7 BL EBL/BLSED SIN SED/SIN 1.526 1.214  1.3311 2.450 3.456 0.709 ED12 ED23 ED34ED45 ED56 ED67 0.491 0.327 0.224 0.211 0.206 0.991 ED12/IN12 ED23/IN23ED34/IN34 ED45/IN45 ED56/IN56 ED67/IN67 0.766 6.546 4.480 0.601 0.1780.820 |f/f1| |f/f2| |f/f3| |f/f4| |f/f5| |f/f6|  1.0238  0.9475  0.3898 0.0010  0.6553  0.0864 |f/f7| ΣPPR ΣNPR ΣPPR/|ΣNPR| IN12/f IN67/f 0.8895  1.5009  2.4923  0.6022  0.0740  0.1397 |f1/f2| |f2/f3| (TP1 +IN12)/TP2 (TP7 + IN67)/TP6  0.9254  0.4114 6.4988 4.1996 HOS InTLHOS/HOI InS/HOS ODT % TDT %  9.4296  8.2157  2.8574  0.7403  1.7716 1.1496 HVT11 HVT12 HVT21 HVT22 HVT31 HVT32 0    0     1.4874 0    0   0    HVT61 HVT62 HVT71 HVT72 HVT72/HOI HVT72/HOS  0.7614  0.7282 0    0.8546  0.2590  0.0906 IN12 IN23 IN34 IN45 IN56 IN67 0.6405 mm 0.0500mm 0.0500 mm 0.3520 mm 1.1540 mm 1.2092 mm

The results of the equations of the second embodiment based on Table 3and Table 4 are listed in the following table:

Values related to the inflection points of the second embodiment(Reference wavelength: 940 nm) HIF111 2.7553 HIF111/HOI 0.8349 SGI1111.0894 |SGI111|/(|SGI111| + TP1) 0.3574 HIF211 0.8718 HIF211/HOI 0.2642SGI211 −0.0319 |SGI211|/(|SGI211| + TP2) 0.0739 HIF221 2.3452 HIF221/HOI0.7107 SGI221 0.1573 |SGI221|/(|SGI221| + TP2) 0.2823 HIF321 2.3097HIF321/HOI 0.6999 SGI321 0.5850 |SGI321|/(|SGI321| + TP3) 0.5727 HIF4112.1383 HIF411/HOI 0.6480 SGI411 0.6674 |SGI411|/(|SGI411| + TP4) 0.5854HIF421 1.3945 HIF421/HOI 0.4226 SGI421 0.2998 |SGI421|/(|SGI421| + TP4)0.3881 HIF511 1.2786 HIF511/HOI 0.3875 SGI511 0.2374|SGI511|/(|SGI511| + TP5) 0.3081 HIF521 1.4821 HIF521/HOI 0.4491 SGI5210.2273 |SGI521|/(|SGI521| + TP5) 0.2989 HIF522 1.7387 HIF522/HOI 0.5269SGI522 0.2907 |SGI522|/(|SGI522| + TP5) 0.3529 HIF611 0.4426 HIF611/HOI0.1341 SGI611 0.0046 |SGI611|/(|SGI611| + TP6) 0.0109 HIF612 2.1144HIF612/HOI 0.6407 SGI612 −0.4722 |SGI612|/(|SGI612| + TP6) 0.5311 HIF6210.4180 HIF621/HOI 0.1267 SGI621 0.0030 |SGI621|/(|SGI621| + TP6) 0.0071HIF622 2.2740 HIF622/HOI 0.6891 SGI622 −0.3952 |SGI622|/(|SGI622| + TP6)0.4866 HIF711 2.5009 HIF711/HOI 0.7578 SGI711 −0.7984|SGI711|/(|SGI711| + TP7) 0.5957 HIF721 0.4574 HIF721/HOI 0.1386 SGI7210.0110 |SGI721|/(|SGI721| + TP7) 0.0198

Third Embodiment

As shown in FIG. 3A and FIG. 3B, an optical image capturing system 30 ofthe third embodiment of the present invention includes, along an opticalaxis from an object side to an image side, a first lens 310, an aperture300, a second lens 320, a third lens 330, a fourth lens 340, a fifthlens 350, a sixth lens 360, a seventh lens 370, an infrared rays filter380, an image plane 390, and an image sensor 392. FIG. 3C shows amodulation transformation of the optical image capturing system 30 ofthe third embodiment of the present application in infrared spectrum.

The first lens 310 has positive refractive power and is made of plastic.An object-side surface 312 thereof, which faces the object side, is aconvex aspheric surface, and an image-side surface 314 thereof, whichfaces the image side, is a concave aspheric surface. The object-sidesurface 312 and the image-side surface 314 both have an inflectionpoint.

The second lens 320 has negative refractive power and is made ofplastic. An object-side surface 322 thereof, which faces the objectside, is a concave aspheric surface, and an image-side surface 324thereof, which faces the image side, is a concave aspheric surface. Theobject-side surface 322 has two inflection points, and the image-sidesurface 324 has an inflection point.

The third lens 330 has positive refractive power and is made of plastic.An object-side surface 332 thereof, which faces the object side, is aconvex aspheric surface, and an image-side surface 334 thereof, whichfaces the image side, is a concave aspheric surface.

The fourth lens 340 has negative refractive power and is made ofplastic. An object-side surface 342, which faces the object side, is aconvex aspheric surface, and an image-side surface 344, which faces theimage side, is a concave aspheric surface. The object-side surface 342has two inflection points, and the image-side surface 344 has aninflection point.

The fifth lens 350 has positive refractive power and is made of plastic.An object-side surface 352, which faces the object side, is a convexaspheric surface, and an image-side surface 354, which faces the imageside, is a concave aspheric surface. The object-side surface 352 hasthree inflection points, and the image-side surface 354 has twoinflection points.

The sixth lens 360 has positive refractive power and is made of plastic.An object-side surface 362, which faces the object side, is a convexaspheric surface, and an image-side surface 364, which faces the imageside, is a convex aspheric surface. The object-side surface 362 has twoinflection points, and the image-side surface 364 has an inflectionpoint. Whereby, the incident angle of each view field entering the sixthlens 360 can be effectively adjusted to improve aberration.

The seventh lens 370 has negative refractive power and is made ofplastic. An object-side surface 372, which faces the object side, is aconvex aspheric surface, and an image-side surface 374, which faces theimage side, is a concave aspheric surface. It may help to shorten theback focal length to keep small in size. In addition, the object-sidesurface 372 has two inflection points, and the image-side surface 374has an inflection point, which may reduce an incident angle of the lightof an off-axis field of view and correct the aberration of the off-axisfield of view.

The infrared rays filter 380 is made of glass and between the seventhlens 370 and the image plane 390 specifically for the infrared light.The infrared rays filter 380 gives no contribution to the focal lengthof the system.

The parameters of the lenses of the third embodiment are listed in Table5 and Table 6.

TABLE 5 f = 8.6158 mm; f/HEP = 1.0; HAF = 20.5502 deg Focal ThicknessRefractive Abbe length Surface Radius of curvature (mm) (mm) Materialindex number (mm) 0 Object 1E+18 1E+18 1 1^(st) lens 5.112456695 2.000plastic 1.544 56.09 11.506 2 24.59945941 0.346 3 Aperture 1E+18 0.150 42^(nd) lens −12.29966691 0.419 plastic 1.515 56.55 −9.682 5 8.4013053030.050 6 3^(rd) lens 3.380404133 1.347 plastic 1.661 20.39 10.088 75.855969919 0.431 8 4^(th) lens 2.7783257 0.543 plastic 1.544 56.09−191.577 9 2.519978139 1.142 10 5^(th) lens 3.788193622 0.589 plastic1.661 20.39 15.450 11 5.695684242 1.349 12 6^(th) lens 45.78926584 0.559plastic 1.661 20.39 54.188 13 −154.4855046 0.230 14 7^(th) lens4.700764222 0.394 plastic 1.636 23.89 −10.905 15 2.698147892 0.239 16Infrared rays 1E+18 0.215 BK_7 1.517 64.2 filter 17 1E+18 0.999 18 Imageplane 1E+18 0.001 specifically for infrared light Reference wavelength:940 nm; the position of blocking light: the effective half diameter ofthe clear aperture of the fourth surface is 4.465 mm; the effective halfdiameter of the clear aperture of the fifth surface is 4.465 mm; theeffective half diameter of the clear aperture of the ninth surface is3.100 mm; the exit pupil diameter of the image-side surface of theseventh lens is used as HXP

TABLE 6 Coefficients of the aspheric surfaces Surface 1 2 4 5 6 7 8 k−8.274930E−01 −2.567073E+01 −2.693232E+01 −2.822341E+00 −1.506280E+00 1.723385E+00 −1.229266E+00 A4 −5.472769E−04 −2.776560E−03  1.509562E−02 2.097049E−02  8.419929E−03  7.815428E−03 −3.376133E−03 A6  8.353616E−05 1.067811E−03 −2.074464E−03 −5.357177E−03 −2.037358E−03 −1.131033E−03 8.600724E−04 A8 −1.765267E−05 −1.776985E−04  1.840679E−04  5.811635E−04 3.306483E−04 −1.530358E−05 −4.592307E−04 A10  1.850435E−06 1.538122E−05 −1.186089E−05 −3.466600E−05 −5.206337E−05 −5.932071E−06 4.425298E−05 A12 −1.504192E−07 −7.429141E−07  6.368232E−07 1.172483E−06  5.742477E−06  3.389440E−06  1.538306E−06 A14 6.015457E−09  1.898004E−08 −2.219552E−08 −2.123347E−08 −3.343524E−07−3.639285E−07 −4.269123E−07 A16 −8.820639E−11 −2.015608E−10 3.182121E−10  1.630629E−10  7.739030E−09  1.210206E−08  1.699109E−08Surface 9 10 11 12 13 14 15 k −3.170098E+00 −7.290405E+00  4.256323E−01−7.269228E+01 −3.156745E+01 −3.417011E+01 −1.398615E+01 A4  2.106319E−03 3.884817E−03 −1.052475E−02  1.455030E−02 −2.140274E−02 −1.349309E−01−7.874989E−02 A6  1.472733E−03 −1.384577E−04  2.067012E−03 −2.247441E−02 5.048437E−03  5.903182E−02  3.133721E−02 A8 −9.134375E−04 −1.498622E−03−1.797602E−03  1.365764E−02  2.037305E−03 −1.392772E−02 −7.652589E−03A10  1.709433E−04  6.267565E−04  6.188574E−04 −5.233465E−03−1.529550E−03  1.866830E−03  1.132295E−03 A12 −1.749428E−05−1.281974E−04 −1.107698E−04  1.091974E−03  3.350093E−04 −1.454527E−04−1.002298E−04 A14  9.481144E−07  1.283923E−05  9.987438E−06−1.155219E−04 −3.278021E−05  6.348745E−06  4.896584E−06 A16−2.050334E−08 −4.921486E−07 −3.343660E−07  4.839359E−06  1.227615E−06−1.234321E−07 −1.019593E−07

An equation of the aspheric surfaces of the third embodiment is the sameas that of the first embodiment, and the definitions are the same aswell.

The exact parameters of the third embodiment based on Table 5 and Table6 are listed in the following table:

Third embodiment (Reference wavelength: 940 nm) MTFE0 MTFE3 MTFE7 MTFQ0MTFQ3 MTFQ7 0.81  0.77  0.44  0.53  0.54  0.26  ETP1 ETP2 ETP3 ETP4 ETP5ETP6 1.429 0.844 1.039 0.506 0.499 0.761 ETP7 ETL EBL EIN EIR PIR 0.84210.303  1.731 8.572 0.516 0.239 EIN/ETL SETP/EIN EIR/PIR SETP STPSETP/STP 0.832 0.691 2.162 5.919 5.850 1.012 ETP1/TP1 ETP2/TP2 ETP3/TP3ETP4/TP4 ETP5/TP5 ETP6/TP6 0.714 2.014 0.771 0.932 0.847 1.362 ETP7/TP7BL EBL/BL SED SIN SED/SIN 2.138 1.259  1.37499 2.653 3.698 0.717 ED12ED23 ED34 ED45 ED56 ED67 0.481 0.597 0.570 0.598 0.158 0.248 ED12/IN12ED23/IN23 ED34/IN34 ED45/IN45 ED56/IN56 ED67/IN67 0.969 11.948  1.3250.524 0.117 1.077 |f/f1| |f/f2| |f/f3| |f/f4| |f/f5| |f/f6|  0.7488 0.8899  0.8541  0.0450  0.5576  0.1590 |f/f7| ΣPPR ΣNPR ΣPPR/|ΣNPR|IN12/f IN67/f  0.7901  1.8069  2.2376  0.8075  0.0576  0.0267 |f1/f2||f2/f3| (TP1 + IN12)/TP2 (TP7 + IN67)/TP6  1.1884  0.9598 5.9590 1.1168HOS InTL HOS/HOI InS/HOS ODT % TDT % 10.8072  9.5482  3.2749  0.7829 2.1571  1.1847 HVT11 HVT12 HVT21 HVT22 HVT31 HVT32 0     3.9133  1.28700    0    0    HVT61 HVT62 HVT71 HVT72 HVT72/HOI HVT72/HOS  1.1503 0    0.6371  1.1627  0.3523  0.1076 IN12 IN23 IN34 IN45 IN56 IN67 0.4963 mm0.0500 mm 0.4306 mm 1.1416 mm 1.3492 mm 0.2301 mm

The results of the equations of the third embodiment based on Table 5and Table 6 are listed in the following table:

Values related to the inflection points of the third embodiment(Reference wavelength: 940 nm) HIF111 3.1047 HIF111/HOI 0.9408 SGI1110.9030 |SGI111|/(|SGI111| + TP1) 0.3111 HIF121 2.5770 HIF121/HOI 0.7809SGI121 0.1166 |SGI121|/(|SGI121| + TP1) 0.0551 HIF211 0.6855 HIF211/HOI0.2077 SGI211 −0.0156 |SGI211|/(|SGI211| + TP2) 0.0359 HIF212 4.0370HIF212/HOI 1.2233 SGI212 0.6671 |SGI212|/(|SGI212| + TP2) 0.6143 HIF2211.9144 HIF221/HOI 0.5801 SGI221 0.3157 |SGI221|/(|SGI221| + TP2) 0.4298HIF411 1.8240 HIF411/HOI 0.5527 SGI411 0.5411 |SGI411|/(|SGI411| + TP4)0.4990 HIF412 3.1784 HIF412/HOI 0.9631 SGI412 1.0084|SGI412|/(|SGI412| + TP4) 0.6498 HIF421 1.7809 HIF421/HOI 0.5397 SGI4210.5307 |SGI421|/(|SGI421| + TP4) 0.4941 HIF511 1.4214 HIF511/HOI 0.4307SGI511 0.2285 |SGI511|/(|SGI511| + TP5) 0.2795 HIF512 2.6242 HIF512/HOI0.7952 SGI512 0.3486 |SGI512|/(|SGI512| + TP5) 0.3717 HIF513 2.7118HIF513/HOI 0.8218 SGI513 0.3353 |SGI513|/(|SGI513| + TP5) 0.3627 HIF5211.2111 HIF521/HOI 0.3670 SGI521 0.1097 |SGI521|/(|SGI521| + TP5) 0.1570HIF522 2.2993 HIF522/HOI 0.6968 SGI522 0.1878 |SGI522|/(|SGI522| + TP5)0.2418 HIF611 0.7630 HIF611/HOI 0.2312 SGI611 0.0081|SGI611|/(|SGI611| + TP6) 0.0143 HIF612 2.5897 HIF612/HOI 0.7848 SGI612−0.7611 |SGI612|/(|SGI612| + TP6) 0.5767 HIF621 2.7384 HIF621/HOI 0.8298SGI621 −0.7906 |SGI621|/(|SGI621| + TP6) 0.5859 HIF711 0.3426 HIF711/HOI0.1038 SGI711 0.0102 |SGI711|/(|SGI711| + TP7) 0.0253 HIF712 2.5914HIF712/HOI 0.7853 SGI712 −0.6472 |SGI712|/(|SGI712| + TP7) 0.6217 HIF7210.5314 HIF721/HOI 0.1610 SGI721 0.0414 |SGI721|/(|SGI721| + TP7) 0.0951

Fourth Embodiment

As shown in FIG. 4A and FIG. 4B, an optical image capturing system 40 ofthe fourth embodiment of the present invention includes, along anoptical axis from an object side to an image side, a first lens 410, anaperture 400, a second lens 420, a third lens 430, a fourth lens 440, afifth lens 450, a sixth lens 460, a seventh lens 470, an infrared raysfilter 480, an image plane 490 specifically for the infrared light, andan image sensor 492. FIG. 4C shows a modulation transformation of theoptical image capturing system 40 of the fourth embodiment of thepresent application in infrared spectrum.

The first lens 410 has positive refractive power and is made of plastic.An object-side surface 412 thereof, which faces the object side, is aconvex aspheric surface, and an image-side surface 414 thereof, whichfaces the image side, is a concave aspheric surface. The object-sidesurface 412 has an inflection point.

The second lens 420 has negative refractive power and is made ofplastic. An object-side surface 422 thereof, which faces the objectside, is a convex aspheric surface, and an image-side surface 424thereof, which faces the image side, is a concave aspheric surface. Theimage-side surface 424 has an inflection point.

The third lens 430 has positive refractive power and is made of plastic.An object-side surface 432 thereof, which faces the object side, is aconvex aspheric surface, and an image-side surface 434 thereof, whichfaces the image side, is a concave aspheric surface. The object-sidesurface 432 has two inflection points, and the image-side surface 434has three inflection points.

The fourth lens 440 has positive refractive power and is made ofplastic. An object-side surface 442, which faces the object side, is aconvex aspheric surface, and an image-side surface 444, which faces theimage side, is a concave aspheric surface. The object-side surface 442and the image-side surface 444 both have two inflection points.

The fifth lens 450 has positive refractive power and is made of plastic.An object-side surface 452, which faces the object side, is a convexaspheric surface, and an image-side surface 454, which faces the imageside, is a concave aspheric surface. The object-side surface 452 has aninflection point, and the image-side surface 454 has an inflectionpoint.

The sixth lens 460 has positive refractive power and is made of plastic.An object-side surface 462, which faces the object side, is a convexaspheric surface, and an image-side surface 464, which faces the imageside, is a convex aspheric surface. The object-side surface 462 and theimage-side surface 464 both have an inflection point. Whereby, theincident angle of each view field entering the sixth lens 460 can beeffectively adjusted to improve aberration.

The seventh lens 470 has negative refractive power and is made ofplastic. An object-side surface 472, which faces the object side, is aconvex aspheric surface, and an image-side surface 474, which faces theimage side, is a concave aspheric surface. The object-side surface 472has two inflection points, and the image-side surface 474 has twoinflection points. It may help to shorten the back focal length to keepsmall in size. In addition, it may reduce an incident angle of the lightof an off-axis field of view and correct the aberration of the off-axisfield of view.

The infrared rays filter 480 is made of glass and between the seventhlens 470 and the image plane 490 specifically for the infrared light.The infrared rays filter 480 gives no contribution to the focal lengthof the system.

The parameters of the lenses of the fourth embodiment are listed inTable 7 and Table 8.

TABLE 7 f = 6.7787 mm; f/HEP = 1.4; HAF = 25.6275 deg Focal ThicknessRefractive Abbe length Surface Radius of curvature (mm) (mm) Materialindex number (mm) 0 Object 1E+18 1E+18 1 1^(st) lens 3.422929224 0.696plastic 1.584 29.89 19.272 2 4.57054616 0.846 3 Aperture 1E+18 −0.321  42^(nd) lens 22.29252636 0.738 plastic 1.515 56.55 −35.085 5 9.8367651560.150 6 3^(rd) lens 22.8180854 0.543 plastic 1.661 20.39 111.489 732.93339546 0.050 8 4^(th) lens 2.368073586 0.978 plastic 1.544 56.0921.288 9 2.547918656 0.228 10 5^(th) lens 2.560253873 0.602 plastic1.661 20.39 13.392 11 3.284885133 1.203 12 6^(th) lens 19.58525893 0.727plastic 1.661 20.39 9.242 13 −8.586539162 0.758 14 7^(th) lens29.10157108 0.359 plastic 1.636 23.89 −5.979 15 3.312112442 0.228 16Infrared rays 1E+18 0.215 BK_7 1.517 64.2 filter 17 1E+18 1.000 18 Imageplane 1E+18 0.000 specifically for infrared light Reference wavelength:940 nm; the position of blocking light: the effective half diameter ofthe clear aperture of the sixth surface is 2.746 mm; the effective halfdiameter of the clear aperture of the seventh surface is 2.770 mm; theeffective half diameter of the clear aperture of the fifteenth surfaceis 2.950 mm; the exit pupil diameter of the image-side surface of theseventh lens is used as HXP

TABLE 8 Coefficients of the aspheric surfaces Surface 1 2 4 5 6 7 8 k−2.319837E+00 −9.200961E+00 6.852471E+01 −8.945487E+01 6.503287E+018.988503E+01 −1.212746E+00 A4  3.754323E−03  1.273511E−02 1.395197E−02 1.788787E−02 6.017742E−03 5.627701E−03 −7.360646E−04 A6 −1.816684E−03−6.074251E−03 −9.687121E−03  −1.849369E−02 −3.743121E−03  −2.242977E−03 −2.492451E−03 A8  3.151676E−04  1.128158E−03 3.357512E−03  7.075838E−031.191534E−04 2.946467E−04  5.238502E−04 A10 −9.255319E−05 −1.091122E−04−5.754096E−04  −1.482386E−03 3.004769E−04 7.993898E−06  9.690364E−05 A12 1.427989E−05  1.405535E−05 6.353942E−05  1.865340E−04 −8.628215E−05 −1.100013E−05  −8.752066E−05 A14 −8.699769E−07 −2.283839E−06−5.080905E−06  −1.397226E−05 9.987259E−06 2.012662E−06  1.713495E−05 A16 1.727348E−08  1.565328E−07 2.010750E−07  4.914979E−07 −4.295077E−07 −1.254936E−07  −1.076750E−06 Surface 9 10 11 12 13 14 15 k −6.934912E+00−6.306659E+00  2.138094E−01 −8.998695E+01 −2.749949E+01  8.900696E+01−1.427832E+01 A4  6.565919E−03  1.977947E−03 −1.376303E−02 −3.332985E−03−8.580272E−03 −1.087960E−01 −6.615250E−02 A6 −3.199442E−03 −1.176738E−03 5.012094E−03 −1.448698E−03  1.930532E−03  4.370249E−02  2.569579E−02 A8−2.316685E−03 −2.220488E−03 −2.380857E−03  3.294246E−04 −2.070344E−04−1.150533E−02 −6.706569E−03 A10  1.287927E−03  1.517894E−03 1.422015E−03  5.389812E−07 −8.202646E−07  2.030953E−03  1.138817E−03A12 −2.686568E−04 −3.501910E−04 −3.495731E−04 −1.751515E−05 2.236784E−05 −2.179917E−04 −1.211066E−04 A14  2.893757E−05 3.727091E−05  3.396473E−05  2.739816E−06 −6.292785E−06  1.281568E−05 7.307362E−06 A16 −1.344272E−06 −1.680183E−06 −1.190062E−06−3.335559E−07  4.770092E−07 −3.191279E−07 −1.887382E−07

An equation of the aspheric surfaces of the fourth embodiment is thesame as that of the first embodiment, and the definitions are the sameas well.

The exact parameters of the fourth embodiment based on Table 7 and Table8 are listed in the following table:

Fourth embodiment (Reference wavelength: 940 nm) MTFE0 MTFE3 MTFE7 MTFQ0MTFQ3 MTFQ7 0.87  0.8  0.77  0.73  0.54  0.52  ETP1 ETP2 ETP3 ETP4 ETP5ETP6 0.538 0.580 0.538 0.586 0.838 0.581 ETP7 ETL EBL EIN EIR PIR 0.8308.420 1.495 6.925 0.280 0.228 EIN/ETL SETP/EIN EIR/PIR SETP STP SETP/STP0.822 0.648 1.228 4.490 4.643 0.967 ETP1/TP1 ETP2/TP2 ETP3/TP3 ETP4/TP4ETP5/TP5 ETP6/TP6 0.773 0.786 0.992 0.598 1.391 0.799 ETP7/TP7 BL EBL/BLSED SIN SED/SIN 2.311 1.301  1.1491 2.435 2.914 0.836 ED12 ED23 ED34ED45 ED56 ED67 0.353 0.153 0.810 0.405 0.205 0.510 ED12/IN12 ED23/IN23ED34/IN34 ED45/IN45 ED56/IN56 ED67/IN67 0.672 1.022 16.206  1.772 0.1700.673 |f/f1| |f/f2| |f/f3| |f/f4| |f/f5| |f/f6|  0.3517  0.1932  0.0608 0.3184  0.5062  0.7334 |f/f7| ΣPPR ΣNPR ΣPPR/|ΣNPR| IN12/f IN67/f 1.1337  1.4644  1.8331  0.7989  0.0774  0.1118 |f1/f2| |f2/f3| (TP1 +IN12)/TP2 (TP7 + IN67)/TP6  0.5493  0.3147 1.6544 1.5370 HOS InTLHOS/HOI InS/HOS ODT % TDT %  8.8584  7.5569  2.6844  0.8259  1.4828 0.5507 HVT11 HVT12 HVT21 HVT22 HVT31 HVT32 0    0    0     2.1143 0   0    HVT61 HVT62 HVT71 HVT72 HVT72/HOI HVT72/HOS  1.3795 0     0.2888 1.2077  0.3660  0.1363 IN12 IN23 IN34 IN45 IN56 IN67 0.5246 mm 0.1500mm 0.0500 mm 0.2283 mm 1.2028 mm 0.7580 mm

The results of the equations of the fourth embodiment based on Table 7and Table 8 are listed in the following table:

Values related to the inflection points of the fourth embodiment(Reference wavelength: 940 nm) HIF111 1.7103 HIF111/HOI 0.5183 SGI1110.3943 |SGI111|/(|SGI111| + TP1) 0.3615 HIF112 2.5197 HIF112/HOI 0.7635SGI112 0.6659 |SGI112|/(|SGI112| + TP1) 0.4888 HIF221 0.9477 HIF221/HOI0.2872 SGI221 0.0437 |SGI221|/(|SGI221| + TP2) 0.0559 HIF311 1.2856HIF311/HOI 0.3896 SGI311 0.0410 |SGI311|/(|SGI311| + TP3) 0.0703 HIF3121.7426 HIF312/HOI 0.5281 SGI312 0.0660 |SGI312|/(|SGI312| + TP3) 0.1085HIF321 1.6634 HIF321/HOI 0.5040 SGI321 0.0560 |SGI321|/(|SGI321| + TP3)0.0936 HIF322 1.9304 HIF322/HOI 0.5850 SGI322 0.0725|SGI322|/(|SGI322| + TP3) 0.1178 HIF323 2.4141 HIF323/HOI 0.7315 SGI3230.1055 |SGI323|/(|SGI323| + TP3) 0.1629 HIF411 1.8227 HIF411/HOI 0.5523SGI411 0.6271 |SGI411|/(|SGI411| + TP4) 0.3906 HIF421 1.1389 HIF421/HOI0.3451 SGI421 0.2065 |SGI421|/(|SGI421| + TP4) 0.1743 HIF422 1.9022HIF422/HOI 0.5764 SGI422 0.3904 |SGI422|/(|SGI422| + TP4) 0.2852 HIF5112.1362 HIF511/HOI 0.6473 SGI511 0.5906 |SGI511|/(|SGI511| + TP5) 0.4951HIF521 2.0161 HIF521/HOI 0.6110 SGI521 0.7070 |SGI521|/(|SGI521| + TP5)0.5400 HIF611 0.8192 HIF611/HOI 0.2482 SGI611 0.0146|SGI611|/(|SGI611| + TP6) 0.0197 HIF621 2.4022 HIF621/HOI 0.7280 SGI621−0.3221 |SGI621|/(|SGI621| + TP6) 0.3071 HIF711 0.1649 HIF711/HOI 0.0500SGI711 0.0004 |SGI711|/(|SGI711| + TP7) 0.0011 HIF712 1.8319 HIF712/HOI0.5551 SGI712 −0.3594 |SGI712|/(|SGI712| + TP7) 0.5004 HIF721 0.5635HIF721/HOI 0.1708 SGI721 0.0381 |SGI721|/(|SGI721| + TP7) 0.0960 HIF7222.6593 HIF722/HOI 0.8058 SGI722 −0.1949 |SGI722|/(|SGI722| + TP7) 0.3520

Fifth Embodiment

As shown in FIG. 5A and FIG. 5B, an optical image capturing system 50 ofthe fifth embodiment of the present invention includes, along an opticalaxis from an object side to an image side, a first lens 510, an aperture500, a second lens 520, a third lens 530, a fourth lens 540, a fifthlens 550, a sixth lens 560, a seventh lens 570, an infrared rays filter580, an image plane specifically for the infrared light 590, and animage sensor 592. FIG. 5C shows a modulation transformation of theoptical image capturing system 50 of the fifth embodiment of the presentapplication in infrared spectrum, and FIG. 5D shows a modulationtransformation of the optical image capturing system 50 of the fifthembodiment of the present application in infrared spectrum.

The first lens 510 has positive refractive power and is made of plastic.An object-side surface 512, which faces the object side, is a convexaspheric surface, and an image-side surface 514, which faces the imageside, is a concave aspheric surface. The object-side surface 512 has twoinflection points, and the image-side surface 514 has three inflectionpoints.

The second lens 520 has negative refractive power and is made ofplastic. An object-side surface 522 thereof, which faces the objectside, is a convex aspheric surface, and an image-side surface 524thereof, which faces the image side, is a concave aspheric surface. Theobject-side surface 522 has an inflection point, and the image-sidesurface 524 has three inflection points.

The third lens 530 has negative refractive power and is made of plastic.An object-side surface 532, which faces the object side, is a concaveaspheric surface, and an image-side surface 534, which faces the imageside, is a convex aspheric surface. The object-side surface 532 has aninflection point, and the image-side surface 534 has two inflectionpoints.

The fourth lens 540 has negative refractive power and is made ofplastic. An object-side surface 542, which faces the object side, is aconvex aspheric surface, and an image-side surface 544, which faces theimage side, is a concave aspheric surface. The object-side surface 542has an inflection point, and the image-side surface 544 has threeinflection points.

The fifth lens 550 has positive refractive power and is made of plastic.An object-side surface 552, which faces the object side, is a convexaspheric surface, and an image-side surface 554, which faces the imageside, is a concave aspheric surface. The object-side surface 552 and theimage-side surface 554 both have an inflection point.

The sixth lens 560 has positive refractive power and is made of plastic.An object-side surface 562, which faces the object side, is a convexaspheric surface, and an image-side surface 564, which faces the imageside, is a convex aspheric surface. The object-side surface 562 has aninflection point, and the image-side surface 564 has two inflectionpoints. Whereby, the incident angle of each view field entering thesixth lens 560 can be effectively adjusted to improve aberration.

The seventh lens 570 has negative refractive power and is made ofplastic. An object-side surface 572, which faces the object side, is aconcave aspheric surface, and an image-side surface 574, which faces theimage side, is a concave aspheric surface. The object-side surface 572has an inflection point, and the image-side surface 574 has twoinflection points. It may help to shorten the back focal length to keepsmall in size. In addition, it could effectively suppress the incidenceangle of light in the off-axis view field, and correct the off-axis viewfield aberration.

The infrared rays filter 580 is made of glass and between the seventhlens 570 and the image plane specifically for the infrared light 590.The infrared rays filter 580 gives no contribution to the focal lengthof the system.

The parameters of the lenses of the fifth embodiment are listed in Table9 and Table 10.

TABLE 9 f = 6.7546 mm; f/HEP = 1.0; HAF = 25.7508 deg Focal ThicknessRefractive Abbe length Surface Radius of curvature (mm) (mm) Materialindex number (mm) 0 Object 1E+18 1E+18 1 1^(st) lens 5.298245424 0.803plastic 1.584 29.89 11.921 2 21.57523391 1.000 3 Aperture 1E+18 −0.697 4 2^(nd) lens 23.40585276 1.040 plastic 1.515 56.55 −95.106 515.57045994 0.881 6 3^(rd) lens −2.992855613 0.664 plastic 1.661 20.39−104.018 7 −3.405383503 0.050 8 4^(th) lens 2.574574018 0.628 plastic1.544 56.09 −29.561 9 2.027728857 0.064 10 5^(th) lens 2.123128122 0.769plastic 1.661 20.39 8.130 11 3.033309022 1.437 12 6^(th) lens22.79085785 0.793 plastic 1.661 20.39 9.104 13 −7.9244487 0.687 147^(th) lens −30.54121414 0.350 plastic 1.636 23.89 −7.193 15 5.329307080.215 16 Infrared rays 1E+18 0.215 BK_7 1.517 64.2 filter 17 1E+18 0.99918 Image plane 1E+18 0.000 specifically for infrared light Referencewavelength: 940 nm; the position of blocking light: the effective halfdiameter of the clear aperture of the first surface is 3.850 mm; theeffective half diameter of the clear aperture of the sixth surface is3.468 mm; the effective half diameter of the clear aperture of theseventh surface is 3.468 mm; the effective half diameter of the clearaperture of the fifteenth surface is 3.220 mm; the exit pupil diameterof the image-side surface of the seventh lens is used as HXP

TABLE 10 Coefficients of the aspheric surfaces Surface 1 2 4 5 6 7 8 k−5.245636E+00 −8.053831E+01 3.783436E+01 −8.999849E+01 −1.073550E+01−1.270020E+01 −1.088205E+00 A4  1.928599E−03  4.942448E−03 8.338823E−03 3.456488E−03 −3.712552E−03 −9.643133E−03 −1.835446E−02 A6 −7.897549E−04−2.857701E−03 −3.761874E−03  −3.046736E−03  1.016865E−03  3.333087E−03 4.894732E−03 A8  2.638472E−05  7.173579E−04 1.181456E−03  9.194580E−04−7.610935E−05 −6.447460E−04 −1.365563E−03 A10 −3.719980E−06−1.008558E−04 −1.824933E−04  −1.645991E−04 −1.441722E−06  9.187533E−05 2.596052E−04 A12  7.864408E−07  7.947799E−06 1.524817E−05  1.721252E−05 1.140757E−06 −8.327670E−06 −2.908487E−05 A14 −5.082501E−08−3.254641E−07 −6.731053E−07  −9.315642E−07 −8.523554E−08  4.114781E−07 1.900000E−06 A16  1.061118E−09  5.381534E−09 1.206802E−08  1.987826E−08 1.763176E−09 −8.500219E−09 −5.878333E−08 Surface 9 10 11 12 13 14 15 k−4.861370E+00 −3.151498E+00 −1.380852E−01 −8.999002E+01 −3.395831E+01 8.997881E+01 −1.540630E+01 A4  1.847371E−02  1.578337E−02 −2.802058E−03 1.765631E−03 −6.166059E−03 −5.367681E−02 −4.350907E−02 A6 −2.085130E−02−1.170561E−02  2.986950E−03  4.956375E−04  4.293549E−03  2.087925E−02 1.701734E−02 A8  7.418098E−03  4.139603E−03 −1.100715E−03 −7.708985E−05−1.164607E−03 −5.302619E−03 −4.505894E−03 A10 −1.415525E−03−7.914835E−04  1.035897E−04 −1.081823E−05  2.277156E−04  8.425794E−04 7.588408E−04 A12  1.595465E−04  8.848275E−05  1.196524E−05 7.453158E−06 −2.269772E−05 −7.110360E−05 −7.720766E−05 A14−9.837656E−06 −5.393224E−06 −2.975898E−06 −1.663596E−06  6.409401E−07 2.703230E−06  4.339745E−06 A16  2.496134E−07  1.295827E−07 1.462739E−07  9.358254E−08  1.544011E−08 −2.783714E−08 −1.029223E−07

An equation of the aspheric surfaces of the fifth embodiment is the sameas that of the first embodiment, and the definitions are the same aswell.

The exact parameters of the fifth embodiment based on Table 9 and Table10 are listed in the following table:

Fifth embodiment (Reference wavelength: 940 nm) MTFE0 MTFE3 MTFE7 MTFQ0MTFQ3 MTFQ7 0.88  0.87  0.81  0.74  0.71  0.63  ETP1 ETP2 ETP3 ETP4 ETP5ETP6 0.496 0.729 0.662 0.418 0.832 0.653 ETP7 ETL EBL EIN EIR PIR 0.7809.472 1.483 7.990 0.268 0.215 EIN/ETL SETP/EIN EIR/PIR SETP STP SETP/STP0.843 0.572 1.245 4.569 5.048 0.905 ETP1/TP1 ETP2/TP2 ETP3/TP3 ETP4/TP4ETP5/TP5 ETP6/TP6 0.618 0.701 0.996 0.665 1.081 0.824 ETP7/TP7 BL EBL/BLSED SIN SED/SIN 2.228 1.265  1.1723 3.420 3.422 0.999 ED12 ED23 ED34ED45 ED56 ED67 0.587 0.218 1.671 0.450 0.153 0.342 ED12/IN12 ED23/IN23ED34/IN34 ED45/IN45 ED56/IN56 ED67/IN67 1.942 0.247 33.413  7.032 0.1060.497 |f/f1| |f/f2| |f/f3| |f/f4| |f/f5| |f/f6|  0.5666  0.0710  0.0649 0.2285  0.8308  0.7420 |f/f7| ΣPPR ΣNPR ΣPPR/|ΣNPR| IN12/f IN67/f 0.9391  1.6020  1.8409  0.8702  0.0448  0.1017 |f1/f2| |f2/f3| (TP1 +IN12)/TP2 (TP7 + IN67)/TP6  0.1253  0.9143 1.0637 1.3078 HOS InTLHOS/HOI InS/HOS ODT % TDT %  9.7349  8.4701  2.9500  0.8148  1.2770 0.5062 HVT11 HVT12 HVT21 HVT22 HVT31 HVT32  2.8242 0    0     3.4212 2.8786 0    HVT61 HVT62 HVT71 HVT72 HVT72/HOI HVT72/HOS  2.3264  2.0658 2.6379  1.4103  0.4274  0.1449 IN12 IN23 IN34 IN45 IN56 IN67 0.3024 mm0.8814 mm 0.0500 mm 0.0639 mm 1.4372 mm 0.6872 mm

The results of the equations of the fifth embodiment based on Table 9and Table 10 are listed in the following table:

Values related to the inflection points of the fifth embodiment(Reference wavelength: 940 nm) HIF111 1.7198 HIF111/HOI 0.5212 SGI1110.2515 |SGI111|/(|SGI111| + TP1) 0.2384 HIF112 3.8276 HIF112/HOI 1.1599SGI112 0.2909 |SGI112|/(|SGI112| + TP1) 0.2658 HIF121 1.6129 HIF121/HOI0.4887 SGI121 0.0609 |SGI121|/(|SGI121| + TP1) 0.0705 HIF122 3.0770HIF122/HOI 0.9324 SGI122 0.1294 |SGI122|/(|SGI122| + TP1) 0.1387 HIF1233.5286 HIF123/HOI 1.0693 SGI123 0.1413 |SGI123|/(|SGI123| + TP1) 0.1496HIF211 3.0150 HIF211/HOI 0.9136 SGI211 0.5603 |SGI211|/(|SGI211| + TP2)0.3502 HIF221 1.2598 HIF221/HOI 0.3818 SGI221 0.0461|SGI221|/(|SGI221l + TP2) 0.0425 HIF222 2.4869 HIF222/HOI 0.7536 SGI2220.0921 |SGI222|/(|SGI222| + TP2) 0.0814 HIF223 3.1621 HIF223/HOI 0.9582SGI223 0.1214 |SGI223|/(|SGI223| + TP2) 0.1046 HIF311 1.7161 HIF311/HOI0.5200 SGI311 −0.3344 |SGI311|/(|SGI311| + TP3) 0.3348 HIF321 1.7553HIF321/HOI 0.5319 SGI321 −0.3317 |SGI321|/(|SGI321| + TP3) 0.3329 HIF3223.1435 HIF322/HOI 0.9526 SGI322 −0.6300 |SGI322|/(|SGI322| + TP3) 0.4867HIF411 2.7914 HIF411/HOI 0.8459 SGI411 1.1052 |SGI411|/(|SGI411| + TP4)0.6376 HIF421 1.1380 HIF421/HOI 0.3449 SGI421 0.2587|SGI421|/(|SGI421| + TP4) 0.2917 HIF422 1.8434 HIF422/HOI 0.5586 SGI4220.4914 |SGI422|/(|SGI422| + TP4) 0.4389 HIF423 2.6897 HIF423/HOI 0.8151SGI423 0.8243 |SGI423|/(|SGI423| + TP4) 0.5675 HIF511 2.4656 HIF511/HOI0.7471 SGI511 1.0510 |SGI511|/(|SGI511| + TP5) 0.5774 HIF521 2.3776HIF521/HOI 0.7205 SGI521 1.0234 |SGI521|/(|SGI521| + TP5) 0.5709 HIF6111.9504 HIF611/HOI 0.5910 SGI611 0.1086 |SGI611|/(|SGI611| + TP6) 0.1205HIF621 1.2702 HIF621/HOI 0.3849 SGI621 −0.0901 |SGI621|/(|SGI621| + TP6)0.1020 HIF622 2.3880 HIF622/HOI 0.7236 SGI622 −0.1403|SGI622|/(|SGI622| + TP6) 0.1503 HIF711 1.9336 HIF711/HOI 0.5859 SGI711−0.3155 |SGI711|/(|SGI711| + TP7) 0.4741 HIF721 0.6339 HIF721/HOI 0.1921SGI721 0.0299 |SGI721|/(|SGI721| + TP7) 0.0788 HIF722 2.5154 HIF722/HOI0.7623 SGI722 −0.0251 |SGI722|/(|SGI722| + TP7) 0.0669

Sixth Embodiment

As shown in FIG. 6A and FIG. 6B, an optical image capturing system 60 ofthe sixth embodiment of the present invention includes, along an opticalaxis from an object side to an image side, a first lens 610, an aperture600, a second lens 620, a third lens 630, a fourth lens 640, a fifthlens 650, a sixth lens 660, a seventh lens 670, an infrared rays filter680, an image plane specifically for the infrared light 690, and animage sensor 692. FIG. 6C shows a modulation transformation of theoptical image capturing system 60 of the sixth embodiment of the presentapplication in infrared spectrum.

The first lens 610 has positive refractive power and is made of plastic.An object-side surface 612, which faces the object side, is a convexaspheric surface, and an image-side surface 614, which faces the imageside, is a concave aspheric surface. The object-side surface 612 and theimage-side surface 614 both have two inflection points.

The second lens 620 has negative refractive power and is made ofplastic. An object-side surface 622 thereof, which faces the objectside, is a convex aspheric surface, and an image-side surface 624thereof, which faces the image side, is a concave aspheric surface. Theobject-side surface 622 and the image-side surface 624 both have aninflection point.

The third lens 630 has positive refractive power and is made of plastic.An object-side surface 632, which faces the object side, is a convexaspheric surface, and an image-side surface 634, which faces the imageside, is a concave aspheric surface. The object-side surface 632 has twoinflection points, and the image-side surface 634 has an inflectionpoint.

The fourth lens 640 has positive refractive power and is made ofplastic. An object-side surface 642, which faces the object side, is aconvex aspheric surface, and an image-side surface 644, which faces theimage side, is a concave aspheric surface. The object-side surface 642and the image-side surface 644 both have two inflection points.

The fifth lens 650 has positive refractive power and is made of plastic.An object-side surface 652, which faces the object side, is a convexaspheric surface, and an image-side surface 654, which faces the imageside, is a concave aspheric surface. The object-side surface 652 and theimage-side surface 654 both have an inflection point.

The sixth lens 660 has positive refractive power and is made of plastic.An object-side surface 662, which faces the object side, is a concaveaspheric surface, and an image-side surface 664, which faces the imageside, is a convex aspheric surface. The object-side surface 662 has aninflection point, and the image-side surface 664 has two inflectionpoints. Whereby, the incident angle of each view field entering thesixth lens 660 can be effectively adjusted to improve aberration.

The seventh lens 670 has negative refractive power and is made ofplastic. An object-side surface 672, which faces the object side, is aconvex aspheric surface, and an image-side surface 674, which faces theimage side, is a concave aspheric surface. The object-side surface 672has an inflection point, and the image-side surface 674 has twoinflection points. It may help to shorten the back focal length to keepsmall in size. In addition, it may reduce an incident angle of the lightof an off-axis field of view and correct the aberration of the off-axisfield of view.

The infrared rays filter 680 is made of glass and between the seventhlens 670 and the image plane specifically for the infrared light 690.The infrared rays filter 680 gives no contribution to the focal lengthof the system.

The parameters of the lenses of the sixth embodiment are listed in Table11 and Table 12.

TABLE 11 f = 5.4554 mm; f/HEP = 1.0; HAF = 30.7306 deg Focal ThicknessRefractive Abbe length Surface Radius of curvature (mm) (mm) Materialindex number (mm) 0 Object 1E+18 1E+18 1 1^(st) lens 7.403214857 0.636plastic 1.661 20.39 16.166 2 23.98518038 0.492 3 Aperture 1E+18 −0.192 4 2^(nd) lens 27.4566196 0.502 plastic 1.535 56.27 −9.745 5 4.3327974370.141 6 3^(rd) lens 4.806045993 1.216 plastic 1.661 20.39 95.528 74.68719334 0.025 8 4^(th) lens 1.919925537 0.404 plastic 1.661 20.39183.635 9 1.789112884 0.195 10 5 ^(th) lens 1.629179352 0.794 plastic1.661 20.39 4.794 11 2.745525008 1.360 12 6^(th) lens −15.5607797 1.103plastic 1.661 20.39 3.090 13 −1.835123842 0.058 14 7^(th) lens4.668747528 0.496 plastic 1.636 23.89 −3.411 15 1.408817508 0.555 16Infrared rays 1E+18 0.215 BK_7 1.517 64.2 filter 17 1E+18 1.000 18 Imageplane 1E+18 0.000 specifically for infrared light Reference wavelength:940 nm; the position of blocking light: the effective half diameter ofthe clear aperture of the sixth surface is 3.052 mm; the effective halfdiameter of the clear aperture of the seventh surface is 3.052 mm; theeffective half diameter of the clear aperture of the fifteenth surfaceis 3.100 mm; the exit pupil diameter of the image-side surface of theseventh lens is used as HXP

TABLE 12 Coefficients of the aspheric surfaces Surface 1 2 4 5 6 7 8 k−6.471522E+00 5.017512E+01 8.468561E+01 1.519050E−01 −5.849631E−01−4.323861E+01 −1.757211E+00 A4 −1.909932E−03 2.464708E−03 6.877273E−032.028632E−02  3.324090E−02  3.829457E−02 −3.272666E−02 A6 −2.183382E−03−1.658762E−03  3.504253E−03 −1.388918E−02  −1.792549E−02 −2.778540E−02 1.959961E−02 A8  3.649789E−04 9.385835E−05 −1.485691E−03  3.750999E−03 4.378395E−03  7.458736E−03 −7.161591E−03 A10 −3.103639E−05−1.741197E−06  2.773940E−04 −6.050352E−04  −6.921896E−04 −1.152818E−03 1.291453E−03 A12  2.599034E−06 2.546850E−06 −3.323699E−05  5.085651E−05 6.335653E−05  1.062509E−04 −1.204098E−04 A14 −1.795986E−07−3.539700E−07  2.441048E−06 −1.934188E−06  −2.833287E−06 −5.362706E−06 5.498825E−06 A16  5.397901E−09 1.307455E−08 −9.297826E−08  1.919408E−08 4.355499E−08  1.130535E−07 −9.041571E−08 Surface 9 10 11 12 13 14 15 k−4.449897E+00 −3.257344E+00 −6.344560E−02 −8.949906E+01 −5.814758E+00−8.463555E+01 −7.439015E+00 A4 −3.315092E−02  8.706007E−03  1.968907E−02 3.833713E−03  1.024842E−02 −8.118480E−03 −2.173600E−02 A6  2.398266E−02−9.662848E−05 −7.719420E−03  1.775964E−03 −1.218976E−02 −5.344868E−03 5.028822E−03 A8 −5.864643E−03 −1.825622E−03 −1.561896E−03 −2.571649E−03 6.468174E−03  2.793763E−03 −1.216120E−03 A10  5.288627E−04 1.007111E−03  1.266608E−03  1.287524E−03 −1.941318E−03 −6.347361E−04 2.135051E−04 A12  1.421727E−05 −2.261510E−04 −2.744341E−04−2.919860E−04  3.690127E−04  7.790082E−05 −2.508976E−05 A14−5.682184E−06  2.391817E−05  2.540394E−05  3.301279E−05 −3.734553E−05−4.744222E−06  1.663485E−06 A16  2.790551E−07 −1.030034E−06−9.176693E−07 −1.575743E−06  1.478237E−06  1.090987E−07 −4.480557E−08

An equation of the aspheric surfaces of the sixth embodiment is the sameas that of the first embodiment, and the definitions are the same aswell.

The exact parameters of the sixth embodiment based on Table 11 and Table12 are listed in the following table:

Sixth embodiment (Reference wavelength: 940 nm) MTFE0 MTFE3 MTFE7 MTFQ0MTFQ3 MTFQ7 0.75  0.67  0.51  0.52  0.44  0.19  ETP1 ETP2 ETP3 ETP4 ETP5ETP6 0.536 0.622 0.664 0.518 0.596 0.728 ETP7 ETL EBL EIN EIR PIR 0.9018.887 1.431 7.456 0.216 0.555 EIN/ETL SETP/EIN EIR/PIR SETP STP SETP/STP0.839 0.612 0.388 4.566 5.151 0.886 ETP1/TP1 ETP2/TP2 ETP3/TP3 ETP4/TP4ETP5/TP5 ETP6/TP6 0.843 1.239 0.546 1.284 0.751 0.659 ETP7/TP7 BL EBL/BLSED SIN SED/SIN 1.817 1.590 0.9  2.890 2.078 1.390 ED12 ED23 ED34 ED45ED56 ED67 0.661 0.132 0.981 0.469 0.172 0.475 ED12/IN12 ED23/IN23ED34/IN34 ED45/IN45 ED56/IN56 ED67/IN67 2.201 0.938 39.225  2.409 0.1278.254 |f/f1| |f/f2| |f/f3| |f/f4| |f/f5| |f/f6|  0.3375  0.5598  0.0571 0.0297  1.1379  1.7654 |f/f7| ΣPPR ΣNPR ΣPPR/|ΣNPR| IN12/f IN67/f 1.5996  3.3276  2.1594  1.5410  0.0550  0.0106 |f1/f2| |f2/f3| (TP1 +IN12)/TP2 (TP7 + IN67)/TP6  1.6589  0.1020 1.8638 0.5016 HOS InTLHOS/HOI InS/HOS ODT % TDT %  8.8201  7.2297  2.6727  0.8721  1.7527 0.7735 HVT11 HVT12 HVT21 HVT22 HVT31 HVT32  2.0395  1.8794  2.6201 2.4199  2.4397  1.6489 HVT61 HVT62 HVT71 HVT72 HVT72/HOI HVT72/HOS 1.6216  2.1706  1.2956  2.1187  0.6420  0.2402 IN12 IN23 IN34 IN45 IN56IN67 0.3001 mm 0.1412 mm 0.0250 mm 0.1946 mm 1.3599 mm 0.0576 mm

The results of the equations of the sixth embodiment based on Table 11and Table 12 are listed in the following table:

Values related to the inflection points of the sixth embodiment(Reference wavelength: 940 nm) HIF111 1.1749 HIF111/HOI 0.3560 SGI1110.0820 |SGI111|/(|SGI111| + TP1) 0.1142 HIF112 2.6747 HIF112/HOI 0.8105SGI112 0.1089 |SGI112|/(|SGI112| + TP1) 0.1462 HIF121 1.2408 HIF121/HOI0.3760 SGI121 0.0336 |SGI121|/(|SGI121| + TP1) 0.0502 HIF122 2.5783HIF122/HOI 0.7813 SGI122 0.0180 |SGI122|/(|SGI122| + TP1) 0.0275 HIF2112.1407 HIF211/HOI 0.6487 SGI211 0.2634 |SGI211|/(|SGI211| + TP2) 0.3440HIF221 1.6341 HIF221/HOI 0.4952 SGI221 0.3273 |SGI221|/(|SGI221| + TP2)0.3946 HIF311 1.5162 HIF311/HOI 0.4595 SGI311 0.2859|SGI311|/(|SGI311| + TP3) 0.1903 HIF312 2.7512 HIF312/HOI 0.8337 SGI3120.4723 |SGI312|/(|SGI312| + TP3) 0.2797 HIF321 0.9937 HIF321/HOI 0.3011SGI321 0.0946 |SGI321|/(|SGI321| + TP3) 0.0722 HIF411 1.5056 HIF411/HOI0.4562 SGI411 0.4677 |SGI411|/(|SGI411| + TP4) 0.5366 HIF412 2.4486HIF412/HOI 0.7420 SGI412 0.8386 |SGI412|/(|SGI412| + TP4) 0.6749 HIF4211.9207 HIF421/HOI 0.5820 SGI421 0.6588 |SGI421|/(|SGI421| + TP4) 0.6200HIF422 2.7963 HIF422/HOI 0.8474 SGI422 1.0419 |SGI422|/(|SGI422| + TP4)0.7207 HIF511 2.1788 HIF511/HOI 0.6603 SGI511 1.0304|SGI511|/(|SGI511| + TP5) 0.5648 HIF521 2.0340 HIF521/HOI 0.6164 SGI5210.8280 |SGI521|/(|SGI521| + TP5) 0.5105 HIF611 1.0243 HIF611/HOI 0.3104SGI611 −0.0265 |SGI611|/(|SGI611| + TP6) 0.0235 HIF612 2.2118 HIF612/HOI0.6702 SGI612 0.0111 |SGI612|/(|SGI612| + TP6) 0.0099 HIF621 1.4424HIF621/HOI 0.4371 SGI621 −0.3745 |SGI621|/(|SGI621| + TP6) 0.2534 HIF6222.4861 HIF622/HOI 0.7534 SGI622 −0.5198 |SGI622|/(|SGI622| + TP6) 0.3202HIF711 0.6244 HIF711/HOI 0.1892 SGI711 0.0309 |SGI711|/(|SGI711| + TP7)0.0586 HIF712 2.1949 HIF712/HOI 0.6651 SGI712 −0.0179|SGI712|/(|SGI712| + TP7) 0.0349 HIF713 2.9170 HIF713/HOI 0.8839 SGI713−0.0366 |SGI713|/(|SGI713| + TP7) 0.0688 HIF721 0.8213 HIF721/HOI 0.2489SGI721 0.1633 |SGI721|/(|SGI721| + TP7) 0.2477 HIF722 2.9374 HIF722/HOI0.8901 SGI722 0.2348 |SGI722|/(|SGI722| + TP7) 0.3213

It must be pointed out that the embodiments described above are onlysome embodiments of the present invention. All equivalent structureswhich employ the concepts disclosed in this specification and theappended claims should fall within the scope of the present invention.

What is claimed is:
 1. An optical image capturing system, in order alongan optical axis from an object side to an image side, comprising: afirst lens having refractive power; a second lens having refractivepower; a third lens having refractive power; a fourth lens havingrefractive power; a fifth lens having refractive power; a sixth lenshaving refractive power; a seventh lens having refractive power; and animage plane specifically for infrared light; wherein the optical imagecapturing system has a total of the seven lenses with refractive power;at least one lens among the first to the seventh lenses has positiverefractive power; each lens of the first to the seventh lenses has anobject-side surface, which faces the object side, and an image-sidesurface, which faces the image side; wherein the optical image capturingsystem satisfies:0.5≤f/HEP≤1.8;0deg<HAF≤60deg; and0.5≤SETP/STP<1; wherein f is a focal length of the optical imagecapturing system; HEP is an entrance pupil diameter of the optical imagecapturing system; HXP is an exit pupil diameter of the image-sidesurface of the seventh lens; HAF is a half of a maximum field angle ofthe optical image capturing system; ETP1, ETP2, ETP3, ETP4, ETP5, ETP6,and ETP7 are respectively a thickness of the first lens, the secondlens, the third lens, the fourth lens, the fifth lens, the sixth lens,and the seventh lens at a height of half of the exit pupil diameter awayfrom the optical axis; SETP is a sum of the aforementioned ETP1 to ETP7;TP1, TP2, TP3, TP4, TP5, TP6, and TP7 are respectively a thickness ofthe first lens, the second lens, the third lens, the fourth lens, thefifth lens, the sixth lens, and the seventh lens on the optical axis;STP is a sum of the aforementioned TP1 to TP7.
 2. The optical imagecapturing system of claim 1, wherein a wavelength of the infrared lightranges from 700 nm to 1300 nm, and a first spatial frequency is denotedby SP1, which satisfies the following condition: SP1≤440 cycles/mm. 3.The optical image capturing system of claim 1, wherein a wavelength ofthe infrared light ranges from 850 nm to 960 nm, and a first spatialfrequency is denoted by SP1, which satisfies the following condition:SP1≤220 cycles/mm.
 4. The optical image capturing system of claim 1,wherein the optical image capturing system further satisfies:0.2≤EIN/ETL<1; wherein ETL is a distance in parallel with the opticalaxis between a coordinate point at a height of half of the entrancepupil diameter away from the optical axis on the object-side surface ofthe first lens and the image plane specifically for infrared light; EINis a distance in parallel with the optical axis between the coordinatepoint at the height of half of the entrance pupil diameter away from theoptical axis on the object-side surface of the first lens and acoordinate point at a height of half of the entrance pupil diameter awayfrom the optical axis on the image-side surface of the seventh lens. 5.The optical image capturing system of claim 1, wherein the optical imagecapturing system further satisfies:0.1≤EBL/BL≤1.5; wherein EBL is a horizontal distance in parallel withthe optical axis between a coordinate point at a height of half of theentrance pupil diameter away from the optical axis on the image-sidesurface of the seventh lens and the image plane specifically forinfrared light; BL is a horizontal distance in parallel with the opticalaxis between the point on the image-side surface of the seventh lenswhere the optical axis passes through and the image plane specificallyfor infrared light.
 6. The optical image capturing system of claim 1,wherein the optical image capturing system further satisfies:IN56≥IN23; wherein IN23 is a distance on the optical axis between thesecond lens and the third lens, and IN56 is a distance on the opticalaxis between the fifth lens and the sixth lens.
 7. The optical imagecapturing system of claim 1, wherein the optical image capturing systemfurther satisfies:IN56>IN34; wherein IN34 is a distance on the optical axis between thethird lens and the fourth lens, and IN56 is a distance on the opticalaxis between the fifth lens and the sixth lens.
 8. The optical imagecapturing system of claim 1, wherein the optical image capturing systemfurther satisfies:IN56>IN45; wherein IN45 is a distance on the optical axis between thefourth lens and the fifth lens, and IN56 is a distance on the opticalaxis between the fifth lens and the sixth lens.
 9. The optical imagecapturing system of claim 1, further comprising an aperture, wherein theoptical image capturing system further satisfies:0.2≤InS/HOS≤1.1; wherein InS is a distance between the aperture and theimage plane specifically for infrared light on the optical axis, and HOSis a distance between the object-side surface of the first lens and theimage plane specifically for infrared light on the optical axis.
 10. Anoptical image capturing system, in order along an optical axis from anobject side to an image side, comprising: a first lens having refractivepower; a second lens having refractive power; a third lens havingrefractive power; a fourth lens having refractive power; a fifth lenshaving refractive power; a sixth lens having refractive power; a seventhlens having refractive power; and an image plane specifically forinfrared light; wherein the optical image capturing system has a totalof seven lens with refractive power; at least one surface of at leastone lens among the first lens to the seventh lens has at least aninflection point; at least one lens among the first lens to the seventhlens has positive refractive power; each lens among the first to theseventh lenses has an object-side surface, which faces the object side,and an image-side surface, which faces the image side; wherein theoptical image capturing system satisfies:0.5≤f/HEP≤1.5;0deg<HAF≤45deg; and0.2≤EIN/ETL<1; wherein f is a focal length of the optical imagecapturing system; HEP is an entrance pupil diameter of the optical imagecapturing system; HXP is an exit pupil diameter of the image-sidesurface of the seventh lens; HAF is a half of the maximum field angle ofthe optical image capturing system; ETL is a distance in parallel withthe optical axis between a coordinate point at a height of half of theentrance pupil diameter away from the optical axis on the object-sidesurface of the first lens and the image plane specifically for infraredlight; EIN is a distance in parallel with the optical axis between thecoordinate point at the height of half of the entrance pupil diameteraway from the optical axis on the object-side surface of the first lensand a coordinate point at a height of half of the entrance pupildiameter away from the optical axis on the image-side surface of theseventh lens.
 11. The optical image capturing system of claim 10,wherein the optical image capturing system further satisfies:MTFQ0≥0.01;MTFQ3≥0.01; andMTFQ7≥0.01 wherein MTFQ0, MTFQ3, and MTFQ7 are respectively values ofmodulation transfer function of infrared light in a spatial frequency of110 cycles/mm at the optical axis, 0.3 HOI, and 0.7 HOI on the imageplane specifically for infrared light.
 12. The optical image capturingsystem of claim 10, wherein the optical image capturing system furthersatisfies:MTFE0≥0.01;MTFE3≥0.01; andMTFE7≥0.01 wherein MTFE0, MTFE3, and MTFE7 are respectively values ofmodulation transfer function of infrared light in a spatial frequency of55 cycles/mm at the optical axis, 0.3 HOI, and 0.7 HOI on the imageplane specifically for infrared light.
 13. The optical image capturingsystem of claim 10, wherein the optical image capturing system furthersatisfies:0.5≤HOS/HOI≤6; wherein HOS is a distance between the object-side surfaceof the first lens and the image plane specifically for infrared light onthe optical axis; HOI is a maximum height for image formationperpendicular to the optical axis on the image plane specifically forinfrared light.
 14. The optical image capturing system of claim 10,further comprising an aperture disposed before the image-side surface ofthe third lens.
 15. The optical image capturing system of claim 10,wherein the image-side surface of the first lens is concave on theoptical axis.
 16. The optical image capturing system of claim 10,wherein the object-side surface of the second lens is convex on theoptical axis.
 17. The optical image capturing system of claim 10,wherein the object-side surface of the fourth lens is convex on theoptical axis, and the image-side surface of the fourth lens is concaveon the optical axis.
 18. The optical image capturing system of claim 10,the object-side surface of the fifth lens is convex on the optical axis,and the image-side surface of the fifth lens is concave on the opticalaxis.
 19. The optical image capturing system of claim 10, wherein thefirst lens to the seventh lens are all made of plastic.
 20. An opticalimage capturing system, in order along an optical axis from an objectside to an image side, comprising: an aperture; a first lens havingrefractive power; a second lens having refractive power; a third lenshaving refractive power; a fourth lens having refractive power; a fifthlens having refractive power; a sixth lens having refractive power; aseventh lens having refractive power; and an image plane specificallyfor infrared light; wherein the optical image capturing system has atotal of the seven lenses having refractive power; at least one surfaceof each of at least two lenses among the first lens to the seventh lenshas at least an inflection point; each lens of the first to the seventhlenses has an object-side surface, which faces the object side, and animage-side surface, which faces the image side; wherein the opticalimage capturing system satisfies:0.5≤f/HEP≤1.4;0deg<HAF≤30deg; and0.5≤SETP/STP<1; wherein f is a focal length of the optical imagecapturing system; HEP is an entrance pupil diameter of the optical imagecapturing system; HXP is an exit pupil diameter of the image-sidesurface of the seventh lens; HAF is a half of a maximum view angle ofthe optical image capturing system; ETP1, ETP2, ETP3, ETP4, ETP5, ETP6,and ETP7 are respectively a thickness of the first lens, the secondlens, the third lens, the fourth lens, the fifth lens, the sixth lens,and the seventh lens at a height of half of the exit pupil diameter awayfrom the optical axis; SETP is a sum of the aforementioned ETP1 to ETP7;TP1, TP2, TP3, TP4, TP5, TP6, and TP7 are respectively a thickness ofthe first lens, the second lens, the third lens, the fourth lens, thefifth lens, the sixth lens, and the seventh lens on the optical axis;STP is a sum of the aforementioned TP1 to TP7.
 21. The optical imagecapturing system of claim 20, wherein the optical image capturing systemfurther satisfies:0 mm<HOS≤20 mm; wherein HOS is a distance between the object-sidesurface of the first lens and the image plane specifically for infraredlight on the optical axis.
 22. The optical image capturing system ofclaim 20, wherein a wavelength of the infrared light ranges from 850 nmto 960 nm, and a first spatial frequency is denoted by SP1, whichsatisfies the following condition: SP1<220 cycles/mm.
 23. The opticalimage capturing system of claim 20, wherein the first lens to theseventh lens are all made of plastic.
 24. The optical image capturingsystem of claim 20, wherein the optical image capturing system furthersatisfies:IN56>IN23;IN56>IN34; andIN56>IN45; wherein IN23 is a distance on the optical axis between thesecond lens and the third lens, IN34 is a distance on the optical axisbetween the third lens and the fourth lens, IN45 is a distance on theoptical axis between the fourth lens and the fifth lens, and IN56 is adistance on the optical axis between the fifth lens and the sixth lens.25. The optical image capturing system of claim 20, further comprisingan aperture and an image sensor, wherein the optical image capturingsystem further satisfies:0.2≤InS/HOS≤1.1; wherein the image sensor is disposed on the image planespecifically for infrared light and is provided with at least onehundred thousand pixels, and InS is a distance between the aperture andthe image plane specifically for infrared light on the optical axis; HOSis a distance between the object-side surface of the first lens and theimage plane specifically for infrared light on the optical axis.